mirror of https://github.com/stid/woz64.git
Fine Tune (progress)
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747
arch/keyb.asm
747
arch/keyb.asm
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@ -1,747 +0,0 @@
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BasicUpstart2(start)
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// c64
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.const bgcolor = $d020
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.const bordercolor = $d021
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.const screenram = $0400
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// kernel functions
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.const bsout = $ab1e //kernel character output sub
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.const chrout = $ffd2
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.const clearscreen = $e544
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// chars
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.const cr = 13
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// memory map
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.const kernel = $ff80
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.const start_basic = $0281
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.const end_basic = $0037
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.const step_size_garb = $000f
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.const dataset = $0090
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.const input_dev = 153
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.const out_dev = 154
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.const time_1 = 160
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.const time_2 = 161
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.const time_3 = 162
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.const ds_motor = 192
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// color petscii
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.const color_cyan = $9f
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.const color_light_blue = $9a
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.const color_green = $1e
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// local const
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.const pline_len = 40
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.const hex_open_chr = $5b
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.const hex_close_chr = $5d
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.macro printHexByte(stringAddr, value) {
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lda #<stringAddr
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ldy #>stringAddr
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ldx value
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jsr printhex_row
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}
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.macro printHexWord(stringAddr, value) {
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bPrint(stringAddr)
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jsr popenhex
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lda value+1
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jsr printhex
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lda value
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jsr printhex
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jsr pclosehex
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bChar(cr)
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}
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.macro bPrint(stringAddr) {
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lda #<stringAddr
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ldy #>stringAddr
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jsr bsout
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}
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.macro bChar(char) {
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lda #char
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jsr chrout
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}
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//==========================================================
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// code
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//==========================================================
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start:
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ldx #$00 // color
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stx $d021 // set background color
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stx $d020 // set border color
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jsr clearscreen
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bChar(color_cyan)
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bPrint(str_about)
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bChar(cr)
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bChar(color_light_blue)
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getKeyb:
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jsr Keyboard
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bcs NoValidInput
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stx TempX
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sty TempY
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cmp #$ff
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// Check A for Alphanumeric keys
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beq NoNewAphanumericKey
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// jsr printhex
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cmp #'m'
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beq mapMemory
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cmp #'q'
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beq exit
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jmp getKeyb
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NoNewAphanumericKey:
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// Check X & Y for Non-Alphanumeric Keys
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ldx TempX
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ldy TempY
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//stx $0401
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//sty $0402
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NoValidInput: // This may be substituted for an errorhandler if needed.
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jmp getKeyb
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exit: rts
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mapMemory:
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ldx #pline_len // lenht of pline
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jsr pline
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// ----------------------
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// ------ map table start
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// ----------------------
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// kernel
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printHexByte(str_row_kernel, kernel)
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// start basic area
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printHexWord(str_row_basic_start, start_basic)
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// end basic area
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printHexWord(str_row_basic_end, end_basic)
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// garbadge
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printHexByte(str_row_step_size_garb, printhex_row)
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// dataset
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printHexByte(str_row_dataset, dataset)
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// input dev
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printHexByte(str_row_input_dev, input_dev)
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// out dev
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printHexByte(str_row_out_dev, out_dev)
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// time 1
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printHexByte(str_row_time_1, time_1)
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// time 2
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printHexByte(str_row_time_2, time_2)
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// time 2
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printHexByte(str_row_time_2, time_3)
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// dataset motor
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printHexByte(str_row_ds_motor, ds_motor)
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// ----------------------
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// ------ map table end
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// ----------------------
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bChar(cr)
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ldx #pline_len
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jsr pline
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rts
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// ————————————————————————————————————
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// popenhex
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// ————————————————————————————————————
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popenhex:
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bChar(hex_open_chr)
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bChar(color_green)
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rts
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// ————————————————————————————————————
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// pclosehex
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// ————————————————————————————————————
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pclosehex:
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bChar(color_light_blue)
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bChar(hex_close_chr)
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rts
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// ————————————————————————————————————
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// printhex_row
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// ————————————————————————————————————
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// ————————————————————————————————————
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// preparatory ops: .a: msn ascii char
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// .x: lsn ascii char
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// .y: value
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//
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// returned values: none
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// ————————————————————————————————————
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printhex_row:
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sta a_cache // preserve a
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txa // store x using a as it will be lost after bsout
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pha
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lda a_cache // get back a
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jsr bsout
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jsr popenhex
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pla // saved x back in a from saved a
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jsr printhex
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jsr pclosehex
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bChar(cr)
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rts
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// ————————————————————————————————————
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// printhex
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// ————————————————————————————————————
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// ————————————————————————————————————
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// preparatory ops: .a: byte to convert
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//
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// returned values: none
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// ————————————————————————————————————
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printhex:
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pha
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jsr binhex
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jsr chrout
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txa
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jsr chrout
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pla
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rts
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// ————————————————————————————————————
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// btohex
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// ————————————————————————————————————
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// ————————————————————————————————————
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// preparatory ops: .a: byte to convert
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//
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// returned values: .a: msn ascii char
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// .x: lsn ascii char
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// .y: entry value
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// ————————————————————————————————————
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binhex: pha //save byte
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and #%00001111 //extract lsn
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tax //save it
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pla //recover byte
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lsr //extract...
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lsr //msn
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lsr
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lsr
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pha //save msn
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txa //lsn
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jsr binhex1 //generate ascii lsn
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tax //save
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pla //get msn & fall thru
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//
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// convert nybble to hex ascii equivalent...
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binhex1: cmp #$0a
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bcc binhex2 //in decimal range
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adc #$66 //hex compensate
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binhex2: eor #%00110000 //finalize nybble
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rts //done
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// ————————————————————————————————————
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// pline
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// ————————————————————————————————————
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// ————————————————————————————————————
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// preparatory ops: .x: lenght
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// returned values: none
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// ————————————————————————————————————
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pline:
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cpx #0
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bne pline_start
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ldx #12 // default to 12 if 0 is passed in x
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pline_start: lda #102
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pline_loop: jsr chrout
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dex
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cpx #0
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bne pline_loop
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lda #cr
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jsr chrout
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rts
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.encoding "petscii_mixed"
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str_about:
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.text "c=64 mapper v2.0 by =stid="
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.byte 13, 0
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str_row_kernel:
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.text " kernel "
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.byte 0
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str_row_basic_start:
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.text " start basic area "
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.byte 0
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str_row_basic_end:
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.text " end basic area "
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.byte 0
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str_row_step_size_garb:
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.text " step size garbage "
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.byte 0
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str_row_dataset:
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.text " dataset "
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.byte 0
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str_row_input_dev:
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.text " input device "
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.byte 0
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str_row_out_dev:
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.text " output device "
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.byte 0
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str_row_time_1:
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.text " time 1 "
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.byte 0
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str_row_time_2:
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.text " time 2 "
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.byte 0
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str_row_time_3:
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.text " time 3 "
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.byte 0
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str_row_ds_motor:
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.text " dataset motor "
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.byte 0
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a_cache:
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.byte 0
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TempX:
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.byte 0
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TempY:
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.byte 0
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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Keyboard IO Routine
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~~~~~~~~~~~~~~~~~~~
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By: TWW/CTR
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Preparatory Settings
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~~~~~~~~~~~~~~~~~~~~
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None
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Destroys
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~~~~~~~~
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Accumulator
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X-Register
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Y-Register
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Carry / Zero / Negative
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$dc00
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$dc01
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$50-$5f
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Footprint
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~~~~~~~~~
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#$206 Bytes
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Information
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~~~~~~~~~~~
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The routine uses "2 Key rollower" or up to 3 if the key-combination doesen't induce shadowing.
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If 2 or 3 keys are pressed simultaneously (within 1 scan) a "No Activity" state has to occur before new valid keys are returned.
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RESTORE is not detectable and must be handled by NMI IRQ.
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SHIFT LOCK is not detected due to unreliability.
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Usage
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~~~~~
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Example Code:
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jsr Keyboard
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bcs NoValidInput
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stx TempX
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sty TempY
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cmp #$ff
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beq NoNewAphanumericKey
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// Check A for Alphanumeric keys
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sta $0400
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NoNewAphanumericKey:
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// Check X & Y for Non-Alphanumeric Keys
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ldx TempX
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ldy TempY
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stx $0401
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sty $0402
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NoValidInput: // This may be substituted for an errorhandler if needed.
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Returned
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~~~~~~~~
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+=================================================+
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| Returned in Accumulator |
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+===========+===========+=============+===========+
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| $00 - @ | $10 - p | $20 - SPC | $30 - 0 |
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| $01 - a | $11 - q | $21 - | $31 - 1 |
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| $02 - b | $12 - r | $22 - | $32 - 2 |
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| $03 - c | $13 - s | $23 - | $33 - 3 |
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| $04 - d | $14 - t | $24 - | $34 - 4 |
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| $05 - e | $15 - u | $25 - | $35 - 5 |
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| $06 - f | $16 - v | $26 - | $36 - 6 |
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| $07 - g | $17 - w | $27 - | $37 - 7 |
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| $08 - h | $18 - x | $28 - | $38 - 8 |
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| $09 - i | $19 - y | $29 - | $39 - 9 |
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| $0a - j | $1a - z | $2a - * | $3a - : |
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| $0b - k | $1b - | $2b - + | $3b - ; |
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| $0c - l | $1c - £ | $2c - , | $3c - |
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| $0d - m | $1d - | $2d - - | $3d - = |
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| $0e - n | $1e - ^ | $2e - . | $3e - |
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| $0f - o | $1f - <- | $2f - / | $3f - |
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+-----------+-----------+-------------+-----------+
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+================================================================================
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| Return in X-Register |
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+=========+=========+=========+=========+=========+=========+=========+=========+
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| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
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+---------+---------+---------+---------+---------+---------+---------+---------+
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| CRSR UD | F5 | F3 | F1 | F7 | CRSR RL | RETURN |INST/DEL |
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+---------+---------+---------+---------+---------+---------+---------+---------+
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+================================================================================
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| Return in Y-Register |
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+=========+=========+=========+=========+=========+=========+=========+=========+
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| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
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+---------+---------+---------+---------+---------+---------+---------+---------+
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|RUN STOP | L-SHIFT | C= | R-SHIFT |CLR/HOME | CTRL | | |
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+---------+---------+---------+---------+---------+---------+---------+---------+
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CARRY:
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- Set = Error Condition (Check A for code):
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A = #$01 => No keyboard activity is detected.
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A = #$02 => Control Port #1 Activity is detected.
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A = #$03 => Key Shadowing / Ghosting is detected.
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A = #$04 => 2 or 3 new keys is detected within one scan
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A = #$05 => Awaiting "No Activity" state
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- Clear = Valid input
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A = #$ff => No new Alphanumeric Keys detected (some key(s) being held down AND/OR some Non-Alphanumeric key is causing valid return).
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A <> #$ff => New Alphanumeric Key returned. Non-Alphanumeric keys may also be returned in X or Y Register
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Issues/ToDo:
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~~~~~~~~~~~~
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- None
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Improvements:
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~~~~~~~~~~~~~
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- Replace the subroutine with a pseudocommand and account for speedcode parameter (Memory vs. Cycles).
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- Shorten the routine / Optimize if possible.
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History:
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~~~~~~~~
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V2.5 - New test tool.
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Added return of error codes.
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Fixed a bug causing Buffer Overflow.
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Fixed a bug in Non Alphanumerical Flags from 2.0.
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V2.1 - Shortened the source by adding .for loops & Updated the header and some comments.
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Added "simultaneous keypress" check.
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V2.0 - Added return of non-Alphanumeric keys into X & Y-Registers.
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Small optimizations here and there.
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V1.1 - Unrolled code to make it faster and optimized other parts of it.
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Removed SHIFT LOCK scanning.
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V1.0 - First Working Version along with test tool.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
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* = * "Keyboard Scan Routine"
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// ZERO PAGE Varibles
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.const ScanResult = $50 // 8 bytes
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.const BufferNew = $58 // 3 bytes
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.const KeyQuantity = $5b // 1 byte
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.const NonAlphaFlagX = $5c // 1 byte
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.const NonAlphaFlagY = $5d // 1 byte
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.const TempZP = $5e // 1 byte
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.const SimultaneousKeys = $5f // 1 byte
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// Operational Variables
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.var MaxKeyRollover = 3
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Keyboard:
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{
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jmp Main
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Routine for Scanning a Matrix Row
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KeyInRow:
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asl
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bcs *+5
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jsr KeyFound
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.for (var i = 0 ; i < 7 ; i++) {
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inx
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asl
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bcs *+5
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jsr KeyFound
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}
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rts
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Routine for handling: Key Found
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KeyFound:
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stx TempZP
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dec KeyQuantity
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bmi OverFlow
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ldy KeyTable,x
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ldx KeyQuantity
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sty BufferNew,x
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ldx TempZP
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rts
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Routine for handling: Overflow
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OverFlow:
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pla // Dirty hack to handle 2 layers of JSR
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pla
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pla
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pla
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// Don't manipulate last legal buffer as the routine will fix itself once it gets valid input again.
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lda #$03
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sec
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rts
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Exit Routine for: No Activity
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NoActivityDetected:
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// Exit With A = #$01, Carry Set & Reset BufferOld.
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lda #$00
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sta SimultaneousAlphanumericKeysFlag // Clear the too many keys flag once a "no activity" state is detected.
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stx BufferOld
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stx BufferOld+1
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stx BufferOld+2
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sec
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lda #$01
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rts
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Exit Routine for Control Port Activity
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ControlPort:
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// Exit with A = #$02, Carry Set. Keep BufferOld to verify input after Control Port activity ceases
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sec
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lda #$02
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rts
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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||||
// Configure Data Direction Registers
|
||||
Main:
|
||||
ldx #$ff
|
||||
stx $dc02 // Port A - Output
|
||||
ldy #$00
|
||||
sty $dc03 // Port B - Input
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for Port Activity
|
||||
|
||||
sty $dc00 // Connect all Keyboard Rows
|
||||
cpx $dc01
|
||||
beq NoActivityDetected
|
||||
|
||||
lda SimultaneousAlphanumericKeysFlag
|
||||
beq !+
|
||||
// Waiting for all keys to be released before accepting new input.
|
||||
lda #$05
|
||||
sec
|
||||
rts
|
||||
!:
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for Control Port #1 Activity
|
||||
|
||||
stx $dc00 // Disconnect all Keyboard Rows
|
||||
cpx $dc01 // Only Control Port activity will be detected
|
||||
bne ControlPort
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Scan Keyboard Matrix
|
||||
|
||||
lda #%11111110
|
||||
sta $dc00
|
||||
ldy $dc01
|
||||
sty ScanResult+7
|
||||
sec
|
||||
.for (var i = 6 ; i > -1 ; i--) {
|
||||
rol
|
||||
sta $dc00
|
||||
ldy $dc01
|
||||
sty ScanResult+i
|
||||
}
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for Control Port #1 Activity (again)
|
||||
|
||||
stx $dc00 // Disconnect all Keyboard Rows
|
||||
cpx $dc01 // Only Control Port activity will be detected
|
||||
bne ControlPort
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Initialize Buffer, Flags and Max Keys
|
||||
|
||||
// Reset current read buffer
|
||||
stx BufferNew
|
||||
stx BufferNew+1
|
||||
stx BufferNew+2
|
||||
|
||||
// Reset Non-AlphaNumeric Flag
|
||||
inx
|
||||
stx NonAlphaFlagY
|
||||
|
||||
// Set max keys allowed before ignoring result
|
||||
lda #MaxKeyRollover
|
||||
sta KeyQuantity
|
||||
|
||||
// Counter to check for simultaneous alphanumeric key-presses
|
||||
lda #$fe
|
||||
sta SimultaneousKeys
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check and flag Non Alphanumeric Keys
|
||||
|
||||
lda ScanResult+6
|
||||
eor #$ff
|
||||
and #%10000000 // Left Shift
|
||||
lsr
|
||||
sta NonAlphaFlagY
|
||||
lda ScanResult+0
|
||||
eor #$ff
|
||||
and #%10100100 // RUN STOP - C= - CTRL
|
||||
ora NonAlphaFlagY
|
||||
sta NonAlphaFlagY
|
||||
lda ScanResult+1
|
||||
eor #$ff
|
||||
and #%00011000 // Right SHIFT - CLR HOME
|
||||
ora NonAlphaFlagY
|
||||
sta NonAlphaFlagY
|
||||
|
||||
lda ScanResult+7 // The rest
|
||||
eor #$ff
|
||||
sta NonAlphaFlagX
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for pressed key(s)
|
||||
|
||||
lda ScanResult+7
|
||||
cmp #$ff
|
||||
beq *+5
|
||||
jsr KeyInRow
|
||||
.for (var i = 6 ; i > -1 ; i--) {
|
||||
ldx #[7-i]*8
|
||||
lda ScanResult+i
|
||||
beq *+5
|
||||
jsr KeyInRow
|
||||
}
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Key Scan Completed
|
||||
|
||||
// Put any new key (not in old scan) into buffer
|
||||
ldx #MaxKeyRollover-1
|
||||
!: lda BufferNew,x
|
||||
cmp #$ff
|
||||
beq Exist // Handle 'null' values
|
||||
cmp BufferOld
|
||||
beq Exist
|
||||
cmp BufferOld+1
|
||||
beq Exist
|
||||
cmp BufferOld+2
|
||||
beq Exist
|
||||
// New Key Detected
|
||||
inc BufferQuantity
|
||||
ldy BufferQuantity
|
||||
sta Buffer,y
|
||||
// Keep track of how many new Alphanumeric keys are detected
|
||||
inc SimultaneousKeys
|
||||
beq TooManyNewKeys
|
||||
Exist:
|
||||
dex
|
||||
bpl !-
|
||||
|
||||
// Anything in Buffer?
|
||||
ldy BufferQuantity
|
||||
bmi BufferEmpty
|
||||
// Yes: Then return it and tidy up the buffer
|
||||
dec BufferQuantity
|
||||
lda Buffer
|
||||
ldx Buffer+1
|
||||
stx Buffer
|
||||
ldx Buffer+2
|
||||
stx Buffer+1
|
||||
jmp Return
|
||||
|
||||
BufferEmpty: // No new Alphanumeric keys to handle.
|
||||
lda #$ff
|
||||
|
||||
Return: // A is preset
|
||||
clc
|
||||
// Copy BufferNew to BufferOld
|
||||
ldx BufferNew
|
||||
stx BufferOld
|
||||
ldx BufferNew+1
|
||||
stx BufferOld+1
|
||||
ldx BufferNew+2
|
||||
stx BufferOld+2
|
||||
// Handle Non Alphanumeric Keys
|
||||
ldx NonAlphaFlagX
|
||||
ldy NonAlphaFlagY
|
||||
rts
|
||||
|
||||
TooManyNewKeys:
|
||||
sec
|
||||
lda #$ff
|
||||
sta BufferQuantity
|
||||
sta SimultaneousAlphanumericKeysFlag
|
||||
lda #$04
|
||||
rts
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
KeyTable:
|
||||
.byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff // CRSR DOWN, F5, F3, F1, F7, CRSR RIGHT, RETURN, INST DEL
|
||||
.byte $ff, $05, $13, $1a, $34, $01, $17, $33 // LEFT SHIFT, "E", "S", "Z", "4", "A", "W", "3"
|
||||
.byte $18, $14, $06, $03, $36, $04, $12, $35 // "X", "T", "F", "C", "6", "D", "R", "5"
|
||||
.byte $16, $15, $08, $02, $38, $07, $19, $37 // "V", "U", "H", "B", "8", "G", "Y", "7"
|
||||
.byte $0e, $0f, $0b, $0d, $30, $0a, $09, $39 // "N", "O" (Oscar), "K", "M", "0" (Zero), "J", "I", "9"
|
||||
.byte $2c, $00, $3a, $2e, $2d, $0c, $10, $2b // ",", "@", ":", ".", "-", "L", "P", "+"
|
||||
.byte $2f, $1e, $3d, $ff, $ff, $3b, $2a, $1c // "/", "^", "=", RIGHT SHIFT, HOME, ";", "*", "£"
|
||||
.byte $ff, $11, $ff, $20, $32, $ff, $1f, $31 // RUN STOP, "Q", "C=" (CMD), " " (SPC), "2", "CTRL", "<-", "1"
|
||||
|
||||
BufferOld:
|
||||
.byte $ff, $ff, $ff
|
||||
|
||||
Buffer:
|
||||
.byte $ff, $ff, $ff, $ff
|
||||
|
||||
BufferQuantity:
|
||||
.byte $ff
|
||||
|
||||
SimultaneousAlphanumericKeysFlag:
|
||||
.byte $00
|
||||
}
|
|
@ -1,801 +0,0 @@
|
|||
BasicUpstart2(start)
|
||||
|
||||
// c64
|
||||
.const bgcolor = $d020
|
||||
.const bordercolor = $d021
|
||||
.const screenram = $0400
|
||||
|
||||
// kernel functions
|
||||
.const kBsout = $ab1e //kernel character output sub
|
||||
.const kChrout = $ffd2
|
||||
.const clearscreen = $e544
|
||||
|
||||
// chars
|
||||
.const cr = 13
|
||||
|
||||
// memory map
|
||||
.const kernel = $ff80
|
||||
.const start_basic = $0281
|
||||
.const end_basic = $0037
|
||||
.const step_size_garb = $000f
|
||||
.const dataset = $0090
|
||||
.const input_dev = 153
|
||||
.const out_dev = 154
|
||||
.const time_1 = 160
|
||||
.const time_2 = 161
|
||||
.const time_3 = 162
|
||||
.const ds_motor = 192
|
||||
|
||||
// color petscii
|
||||
.const color_cyan = $9f
|
||||
.const color_light_blue = $9a
|
||||
.const color_green = $1e
|
||||
|
||||
// local const
|
||||
.const pline_len = 40
|
||||
.const hex_open_chr = $5b
|
||||
.const hex_close_chr = $5d
|
||||
|
||||
// zero page
|
||||
.const stringLow = $FB
|
||||
.const stirngHigh = $FC
|
||||
|
||||
.const videoLow = $FD
|
||||
.const videoHigh = $FE
|
||||
|
||||
|
||||
.macro printHexByte(stringAddr, value) {
|
||||
lda #<stringAddr
|
||||
ldy #>stringAddr
|
||||
ldx value
|
||||
jsr printhex_row
|
||||
}
|
||||
|
||||
.macro printHexWord(stringAddr, value) {
|
||||
bPrint(stringAddr)
|
||||
jsr popenhex
|
||||
lda value+1
|
||||
jsr printhex
|
||||
lda value
|
||||
jsr printhex
|
||||
jsr pclosehex
|
||||
bChar(cr)
|
||||
}
|
||||
|
||||
.macro print(stringAddr) {
|
||||
lda #<stringAddr
|
||||
ldy #>stringAddr
|
||||
jsr bsout
|
||||
}
|
||||
|
||||
.macro bPrint(stringAddr) {
|
||||
lda #<stringAddr
|
||||
ldy #>stringAddr
|
||||
jsr bsout
|
||||
}
|
||||
|
||||
.macro bChar(char) {
|
||||
lda #char
|
||||
jsr kChrout
|
||||
}
|
||||
|
||||
//==========================================================
|
||||
// code
|
||||
//==========================================================
|
||||
|
||||
start:
|
||||
ldx #$00 // color
|
||||
stx $d021 // set background color
|
||||
stx $d020 // set border color
|
||||
|
||||
lda #$04
|
||||
sta videoHigh
|
||||
lda #$00
|
||||
sta videoLow
|
||||
|
||||
jsr clearscreen
|
||||
|
||||
bChar(color_cyan)
|
||||
print(str_about)
|
||||
|
||||
bChar(cr)
|
||||
bChar(color_light_blue)
|
||||
|
||||
getKeyb:
|
||||
jsr Keyboard
|
||||
bcs NoValidInput
|
||||
stx TempX
|
||||
sty TempY
|
||||
cmp #$ff
|
||||
// Check A for Alphanumeric keys
|
||||
beq NoNewAphanumericKey
|
||||
// jsr printhex
|
||||
|
||||
cmp #'m'
|
||||
beq mapMemory
|
||||
cmp #'q'
|
||||
beq exit
|
||||
|
||||
jmp getKeyb
|
||||
|
||||
NoNewAphanumericKey:
|
||||
// Check X & Y for Non-Alphanumeric Keys
|
||||
ldx TempX
|
||||
ldy TempY
|
||||
//stx $0401
|
||||
//sty $0402
|
||||
NoValidInput: // This may be substituted for an errorhandler if needed.
|
||||
jmp getKeyb
|
||||
|
||||
exit: rts
|
||||
|
||||
|
||||
bsout:
|
||||
sty stirngHigh
|
||||
sta stringLow
|
||||
|
||||
|
||||
ldy #$00
|
||||
bloop: lda (stringLow), y
|
||||
cmp #0
|
||||
beq blexit
|
||||
sta (videoLow), y
|
||||
iny
|
||||
cpy #$f0
|
||||
bne bcontinue
|
||||
clc
|
||||
lda videoLow
|
||||
adc #$f0
|
||||
sta videoLow
|
||||
lda videoHigh
|
||||
adc #$00
|
||||
sta videoHigh
|
||||
bcontinue: jmp bloop
|
||||
blexit:
|
||||
rts
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
mapMemory: {
|
||||
ldx #pline_len // lenht of pline
|
||||
jsr pline
|
||||
|
||||
// ----------------------
|
||||
// ------ map table start
|
||||
// ----------------------
|
||||
|
||||
// kernel
|
||||
printHexByte(str_row_kernel, kernel)
|
||||
|
||||
// start basic area
|
||||
printHexWord(str_row_basic_start, start_basic)
|
||||
|
||||
// end basic area
|
||||
printHexWord(str_row_basic_end, end_basic)
|
||||
|
||||
// garbadge
|
||||
printHexByte(str_row_step_size_garb, printhex_row)
|
||||
|
||||
// dataset
|
||||
printHexByte(str_row_dataset, dataset)
|
||||
|
||||
// input dev
|
||||
printHexByte(str_row_input_dev, input_dev)
|
||||
|
||||
// out dev
|
||||
printHexByte(str_row_out_dev, out_dev)
|
||||
|
||||
// time 1
|
||||
printHexByte(str_row_time_1, time_1)
|
||||
|
||||
// time 2
|
||||
printHexByte(str_row_time_2, time_2)
|
||||
|
||||
// time 2
|
||||
printHexByte(str_row_time_2, time_3)
|
||||
|
||||
// dataset motor
|
||||
printHexByte(str_row_ds_motor, ds_motor)
|
||||
|
||||
|
||||
// ----------------------
|
||||
// ------ map table end
|
||||
// ----------------------
|
||||
bChar(cr)
|
||||
|
||||
ldx #pline_len
|
||||
jsr pline
|
||||
rts
|
||||
}
|
||||
|
||||
// ————————————————————————————————————
|
||||
// popenhex
|
||||
// ————————————————————————————————————
|
||||
popenhex:
|
||||
bChar(hex_open_chr)
|
||||
bChar(color_green)
|
||||
rts
|
||||
|
||||
// ————————————————————————————————————
|
||||
// pclosehex
|
||||
// ————————————————————————————————————
|
||||
pclosehex:
|
||||
bChar(color_light_blue)
|
||||
bChar(hex_close_chr)
|
||||
rts
|
||||
|
||||
// ————————————————————————————————————
|
||||
// printhex_row
|
||||
// ————————————————————————————————————
|
||||
// ————————————————————————————————————
|
||||
// preparatory ops: .a: msn ascii char
|
||||
// .x: lsn ascii char
|
||||
// .y: value
|
||||
//
|
||||
// returned values: none
|
||||
// ————————————————————————————————————
|
||||
printhex_row:
|
||||
sta a_cache // preserve a
|
||||
txa // store x using a as it will be lost after ksout
|
||||
pha
|
||||
lda a_cache // get back a
|
||||
jsr bsout
|
||||
jsr popenhex
|
||||
pla // saved x back in a from saved a
|
||||
jsr printhex
|
||||
jsr pclosehex
|
||||
bChar(cr)
|
||||
rts
|
||||
|
||||
// ————————————————————————————————————
|
||||
// printhex
|
||||
// ————————————————————————————————————
|
||||
// ————————————————————————————————————
|
||||
// preparatory ops: .a: byte to convert
|
||||
//
|
||||
// returned values: none
|
||||
// ————————————————————————————————————
|
||||
printhex:
|
||||
pha
|
||||
jsr binhex
|
||||
jsr kChrout
|
||||
txa
|
||||
jsr kChrout
|
||||
pla
|
||||
rts
|
||||
|
||||
// ————————————————————————————————————
|
||||
// btohex
|
||||
// ————————————————————————————————————
|
||||
// ————————————————————————————————————
|
||||
// preparatory ops: .a: byte to convert
|
||||
//
|
||||
// returned values: .a: msn ascii char
|
||||
// .x: lsn ascii char
|
||||
// .y: entry value
|
||||
// ————————————————————————————————————
|
||||
binhex: pha //save byte
|
||||
and #%00001111 //extract lsn
|
||||
tax //save it
|
||||
pla //recover byte
|
||||
lsr //extract...
|
||||
lsr //msn
|
||||
lsr
|
||||
lsr
|
||||
pha //save msn
|
||||
txa //lsn
|
||||
jsr binhex1 //generate ascii lsn
|
||||
tax //save
|
||||
pla //get msn & fall thru
|
||||
//
|
||||
// convert nybble to hex ascii equivalent...
|
||||
binhex1: cmp #$0a
|
||||
bcc binhex2 //in decimal range
|
||||
adc #$66 //hex compensate
|
||||
binhex2: eor #%00110000 //finalize nybble
|
||||
rts //done
|
||||
|
||||
|
||||
|
||||
// ————————————————————————————————————
|
||||
// pline
|
||||
// ————————————————————————————————————
|
||||
// ————————————————————————————————————
|
||||
// preparatory ops: .x: lenght
|
||||
// returned values: none
|
||||
// ————————————————————————————————————
|
||||
pline:
|
||||
cpx #0
|
||||
bne pline_start
|
||||
ldx #12 // default to 12 if 0 is passed in x
|
||||
pline_start: lda #102
|
||||
pline_loop: jsr kChrout
|
||||
dex
|
||||
cpx #0
|
||||
bne pline_loop
|
||||
lda #cr
|
||||
jsr kChrout
|
||||
rts
|
||||
|
||||
|
||||
.encoding "screencode_mixed"
|
||||
str_about:
|
||||
.text "c=64 mapper v2.0 by =stid="
|
||||
.byte 0
|
||||
str_row_kernel:
|
||||
.text " kernel "
|
||||
.byte 0
|
||||
str_row_basic_start:
|
||||
.text " start basic area "
|
||||
.byte 0
|
||||
str_row_basic_end:
|
||||
.text " end basic area "
|
||||
.byte 0
|
||||
str_row_step_size_garb:
|
||||
.text " step size garbage "
|
||||
.byte 0
|
||||
str_row_dataset:
|
||||
.text " dataset "
|
||||
.byte 0
|
||||
str_row_input_dev:
|
||||
.text " input device "
|
||||
.byte 0
|
||||
str_row_out_dev:
|
||||
.text " output device "
|
||||
.byte 0
|
||||
str_row_time_1:
|
||||
.text " time 1 "
|
||||
.byte 0
|
||||
str_row_time_2:
|
||||
.text " time 2 "
|
||||
.byte 0
|
||||
str_row_time_3:
|
||||
.text " time 3 "
|
||||
.byte 0
|
||||
str_row_ds_motor:
|
||||
.text " dataset motor "
|
||||
.byte 0
|
||||
str_row_generic:
|
||||
.text " hex value "
|
||||
.byte 0
|
||||
|
||||
|
||||
a_cache:
|
||||
.byte 0
|
||||
|
||||
TempX:
|
||||
.byte 0
|
||||
TempY:
|
||||
.byte 0
|
||||
cursorX:
|
||||
.byte 0
|
||||
cursorY:
|
||||
.byte 0
|
||||
|
||||
|
||||
|
||||
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
Keyboard IO Routine
|
||||
~~~~~~~~~~~~~~~~~~~
|
||||
By: TWW/CTR
|
||||
|
||||
|
||||
Preparatory Settings
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
None
|
||||
|
||||
|
||||
Destroys
|
||||
~~~~~~~~
|
||||
Accumulator
|
||||
X-Register
|
||||
Y-Register
|
||||
Carry / Zero / Negative
|
||||
$dc00
|
||||
$dc01
|
||||
$50-$5f
|
||||
|
||||
|
||||
Footprint
|
||||
~~~~~~~~~
|
||||
#$206 Bytes
|
||||
|
||||
|
||||
Information
|
||||
~~~~~~~~~~~
|
||||
The routine uses "2 Key rollower" or up to 3 if the key-combination doesen't induce shadowing.
|
||||
If 2 or 3 keys are pressed simultaneously (within 1 scan) a "No Activity" state has to occur before new valid keys are returned.
|
||||
RESTORE is not detectable and must be handled by NMI IRQ.
|
||||
SHIFT LOCK is not detected due to unreliability.
|
||||
|
||||
|
||||
Usage
|
||||
~~~~~
|
||||
Example Code:
|
||||
|
||||
jsr Keyboard
|
||||
bcs NoValidInput
|
||||
stx TempX
|
||||
sty TempY
|
||||
cmp #$ff
|
||||
beq NoNewAphanumericKey
|
||||
// Check A for Alphanumeric keys
|
||||
sta $0400
|
||||
NoNewAphanumericKey:
|
||||
// Check X & Y for Non-Alphanumeric Keys
|
||||
ldx TempX
|
||||
ldy TempY
|
||||
stx $0401
|
||||
sty $0402
|
||||
NoValidInput: // This may be substituted for an errorhandler if needed.
|
||||
|
||||
|
||||
Returned
|
||||
~~~~~~~~
|
||||
|
||||
+=================================================+
|
||||
| Returned in Accumulator |
|
||||
+===========+===========+=============+===========+
|
||||
| $00 - @ | $10 - p | $20 - SPC | $30 - 0 |
|
||||
| $01 - a | $11 - q | $21 - | $31 - 1 |
|
||||
| $02 - b | $12 - r | $22 - | $32 - 2 |
|
||||
| $03 - c | $13 - s | $23 - | $33 - 3 |
|
||||
| $04 - d | $14 - t | $24 - | $34 - 4 |
|
||||
| $05 - e | $15 - u | $25 - | $35 - 5 |
|
||||
| $06 - f | $16 - v | $26 - | $36 - 6 |
|
||||
| $07 - g | $17 - w | $27 - | $37 - 7 |
|
||||
| $08 - h | $18 - x | $28 - | $38 - 8 |
|
||||
| $09 - i | $19 - y | $29 - | $39 - 9 |
|
||||
| $0a - j | $1a - z | $2a - * | $3a - : |
|
||||
| $0b - k | $1b - | $2b - + | $3b - ; |
|
||||
| $0c - l | $1c - £ | $2c - , | $3c - |
|
||||
| $0d - m | $1d - | $2d - - | $3d - = |
|
||||
| $0e - n | $1e - ^ | $2e - . | $3e - |
|
||||
| $0f - o | $1f - <- | $2f - / | $3f - |
|
||||
+-----------+-----------+-------------+-----------+
|
||||
|
||||
+================================================================================
|
||||
| Return in X-Register |
|
||||
+=========+=========+=========+=========+=========+=========+=========+=========+
|
||||
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
|
||||
+---------+---------+---------+---------+---------+---------+---------+---------+
|
||||
| CRSR UD | F5 | F3 | F1 | F7 | CRSR RL | RETURN |INST/DEL |
|
||||
+---------+---------+---------+---------+---------+---------+---------+---------+
|
||||
|
||||
+================================================================================
|
||||
| Return in Y-Register |
|
||||
+=========+=========+=========+=========+=========+=========+=========+=========+
|
||||
| Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
|
||||
+---------+---------+---------+---------+---------+---------+---------+---------+
|
||||
|RUN STOP | L-SHIFT | C= | R-SHIFT |CLR/HOME | CTRL | | |
|
||||
+---------+---------+---------+---------+---------+---------+---------+---------+
|
||||
|
||||
CARRY:
|
||||
- Set = Error Condition (Check A for code):
|
||||
A = #$01 => No keyboard activity is detected.
|
||||
A = #$02 => Control Port #1 Activity is detected.
|
||||
A = #$03 => Key Shadowing / Ghosting is detected.
|
||||
A = #$04 => 2 or 3 new keys is detected within one scan
|
||||
A = #$05 => Awaiting "No Activity" state
|
||||
- Clear = Valid input
|
||||
A = #$ff => No new Alphanumeric Keys detected (some key(s) being held down AND/OR some Non-Alphanumeric key is causing valid return).
|
||||
A <> #$ff => New Alphanumeric Key returned. Non-Alphanumeric keys may also be returned in X or Y Register
|
||||
|
||||
Issues/ToDo:
|
||||
~~~~~~~~~~~~
|
||||
- None
|
||||
|
||||
|
||||
Improvements:
|
||||
~~~~~~~~~~~~~
|
||||
- Replace the subroutine with a pseudocommand and account for speedcode parameter (Memory vs. Cycles).
|
||||
- Shorten the routine / Optimize if possible.
|
||||
|
||||
|
||||
History:
|
||||
~~~~~~~~
|
||||
V2.5 - New test tool.
|
||||
Added return of error codes.
|
||||
Fixed a bug causing Buffer Overflow.
|
||||
Fixed a bug in Non Alphanumerical Flags from 2.0.
|
||||
V2.1 - Shortened the source by adding .for loops & Updated the header and some comments.
|
||||
Added "simultaneous keypress" check.
|
||||
V2.0 - Added return of non-Alphanumeric keys into X & Y-Registers.
|
||||
Small optimizations here and there.
|
||||
V1.1 - Unrolled code to make it faster and optimized other parts of it.
|
||||
Removed SHIFT LOCK scanning.
|
||||
V1.0 - First Working Version along with test tool.
|
||||
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
|
||||
|
||||
* = * "Keyboard Scan Routine"
|
||||
|
||||
|
||||
// ZERO PAGE Varibles
|
||||
.const ScanResult = $50 // 8 bytes
|
||||
.const BufferNew = $58 // 3 bytes
|
||||
.const KeyQuantity = $5b // 1 byte
|
||||
.const NonAlphaFlagX = $5c // 1 byte
|
||||
.const NonAlphaFlagY = $5d // 1 byte
|
||||
.const TempZP = $5e // 1 byte
|
||||
.const SimultaneousKeys = $5f // 1 byte
|
||||
|
||||
// Operational Variables
|
||||
.var MaxKeyRollover = 3
|
||||
|
||||
Keyboard:
|
||||
{
|
||||
jmp Main
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Routine for Scanning a Matrix Row
|
||||
|
||||
KeyInRow:
|
||||
asl
|
||||
bcs *+5
|
||||
jsr KeyFound
|
||||
.for (var i = 0 ; i < 7 ; i++) {
|
||||
inx
|
||||
asl
|
||||
bcs *+5
|
||||
jsr KeyFound
|
||||
}
|
||||
rts
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Routine for handling: Key Found
|
||||
|
||||
KeyFound:
|
||||
stx TempZP
|
||||
dec KeyQuantity
|
||||
bmi OverFlow
|
||||
ldy KeyTable,x
|
||||
ldx KeyQuantity
|
||||
sty BufferNew,x
|
||||
ldx TempZP
|
||||
rts
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Routine for handling: Overflow
|
||||
|
||||
OverFlow:
|
||||
pla // Dirty hack to handle 2 layers of JSR
|
||||
pla
|
||||
pla
|
||||
pla
|
||||
// Don't manipulate last legal buffer as the routine will fix itself once it gets valid input again.
|
||||
lda #$03
|
||||
sec
|
||||
rts
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Exit Routine for: No Activity
|
||||
|
||||
NoActivityDetected:
|
||||
// Exit With A = #$01, Carry Set & Reset BufferOld.
|
||||
lda #$00
|
||||
sta SimultaneousAlphanumericKeysFlag // Clear the too many keys flag once a "no activity" state is detected.
|
||||
stx BufferOld
|
||||
stx BufferOld+1
|
||||
stx BufferOld+2
|
||||
sec
|
||||
lda #$01
|
||||
rts
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Exit Routine for Control Port Activity
|
||||
|
||||
ControlPort:
|
||||
// Exit with A = #$02, Carry Set. Keep BufferOld to verify input after Control Port activity ceases
|
||||
sec
|
||||
lda #$02
|
||||
rts
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Configure Data Direction Registers
|
||||
Main:
|
||||
ldx #$ff
|
||||
stx $dc02 // Port A - Output
|
||||
ldy #$00
|
||||
sty $dc03 // Port B - Input
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for Port Activity
|
||||
|
||||
sty $dc00 // Connect all Keyboard Rows
|
||||
cpx $dc01
|
||||
beq NoActivityDetected
|
||||
|
||||
lda SimultaneousAlphanumericKeysFlag
|
||||
beq !+
|
||||
// Waiting for all keys to be released before accepting new input.
|
||||
lda #$05
|
||||
sec
|
||||
rts
|
||||
!:
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for Control Port #1 Activity
|
||||
|
||||
stx $dc00 // Disconnect all Keyboard Rows
|
||||
cpx $dc01 // Only Control Port activity will be detected
|
||||
bne ControlPort
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Scan Keyboard Matrix
|
||||
|
||||
lda #%11111110
|
||||
sta $dc00
|
||||
ldy $dc01
|
||||
sty ScanResult+7
|
||||
sec
|
||||
.for (var i = 6 ; i > -1 ; i--) {
|
||||
rol
|
||||
sta $dc00
|
||||
ldy $dc01
|
||||
sty ScanResult+i
|
||||
}
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for Control Port #1 Activity (again)
|
||||
|
||||
stx $dc00 // Disconnect all Keyboard Rows
|
||||
cpx $dc01 // Only Control Port activity will be detected
|
||||
bne ControlPort
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Initialize Buffer, Flags and Max Keys
|
||||
|
||||
// Reset current read buffer
|
||||
stx BufferNew
|
||||
stx BufferNew+1
|
||||
stx BufferNew+2
|
||||
|
||||
// Reset Non-AlphaNumeric Flag
|
||||
inx
|
||||
stx NonAlphaFlagY
|
||||
|
||||
// Set max keys allowed before ignoring result
|
||||
lda #MaxKeyRollover
|
||||
sta KeyQuantity
|
||||
|
||||
// Counter to check for simultaneous alphanumeric key-presses
|
||||
lda #$fe
|
||||
sta SimultaneousKeys
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check and flag Non Alphanumeric Keys
|
||||
|
||||
lda ScanResult+6
|
||||
eor #$ff
|
||||
and #%10000000 // Left Shift
|
||||
lsr
|
||||
sta NonAlphaFlagY
|
||||
lda ScanResult+0
|
||||
eor #$ff
|
||||
and #%10100100 // RUN STOP - C= - CTRL
|
||||
ora NonAlphaFlagY
|
||||
sta NonAlphaFlagY
|
||||
lda ScanResult+1
|
||||
eor #$ff
|
||||
and #%00011000 // Right SHIFT - CLR HOME
|
||||
ora NonAlphaFlagY
|
||||
sta NonAlphaFlagY
|
||||
|
||||
lda ScanResult+7 // The rest
|
||||
eor #$ff
|
||||
sta NonAlphaFlagX
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Check for pressed key(s)
|
||||
|
||||
lda ScanResult+7
|
||||
cmp #$ff
|
||||
beq *+5
|
||||
jsr KeyInRow
|
||||
.for (var i = 6 ; i > -1 ; i--) {
|
||||
ldx #[7-i]*8
|
||||
lda ScanResult+i
|
||||
beq *+5
|
||||
jsr KeyInRow
|
||||
}
|
||||
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
// Key Scan Completed
|
||||
|
||||
// Put any new key (not in old scan) into buffer
|
||||
ldx #MaxKeyRollover-1
|
||||
!: lda BufferNew,x
|
||||
cmp #$ff
|
||||
beq Exist // Handle 'null' values
|
||||
cmp BufferOld
|
||||
beq Exist
|
||||
cmp BufferOld+1
|
||||
beq Exist
|
||||
cmp BufferOld+2
|
||||
beq Exist
|
||||
// New Key Detected
|
||||
inc BufferQuantity
|
||||
ldy BufferQuantity
|
||||
sta Buffer,y
|
||||
// Keep track of how many new Alphanumeric keys are detected
|
||||
inc SimultaneousKeys
|
||||
beq TooManyNewKeys
|
||||
Exist:
|
||||
dex
|
||||
bpl !-
|
||||
|
||||
// Anything in Buffer?
|
||||
ldy BufferQuantity
|
||||
bmi BufferEmpty
|
||||
// Yes: Then return it and tidy up the buffer
|
||||
dec BufferQuantity
|
||||
lda Buffer
|
||||
ldx Buffer+1
|
||||
stx Buffer
|
||||
ldx Buffer+2
|
||||
stx Buffer+1
|
||||
jmp Return
|
||||
|
||||
BufferEmpty: // No new Alphanumeric keys to handle.
|
||||
lda #$ff
|
||||
|
||||
Return: // A is preset
|
||||
clc
|
||||
// Copy BufferNew to BufferOld
|
||||
ldx BufferNew
|
||||
stx BufferOld
|
||||
ldx BufferNew+1
|
||||
stx BufferOld+1
|
||||
ldx BufferNew+2
|
||||
stx BufferOld+2
|
||||
// Handle Non Alphanumeric Keys
|
||||
ldx NonAlphaFlagX
|
||||
ldy NonAlphaFlagY
|
||||
rts
|
||||
|
||||
TooManyNewKeys:
|
||||
sec
|
||||
lda #$ff
|
||||
sta BufferQuantity
|
||||
sta SimultaneousAlphanumericKeysFlag
|
||||
lda #$04
|
||||
rts
|
||||
|
||||
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
KeyTable:
|
||||
.byte $ff, $ff, $ff, $ff, $ff, $ff, $ff, $ff // CRSR DOWN, F5, F3, F1, F7, CRSR RIGHT, RETURN, INST DEL
|
||||
.byte $ff, $05, $13, $1a, $34, $01, $17, $33 // LEFT SHIFT, "E", "S", "Z", "4", "A", "W", "3"
|
||||
.byte $18, $14, $06, $03, $36, $04, $12, $35 // "X", "T", "F", "C", "6", "D", "R", "5"
|
||||
.byte $16, $15, $08, $02, $38, $07, $19, $37 // "V", "U", "H", "B", "8", "G", "Y", "7"
|
||||
.byte $0e, $0f, $0b, $0d, $30, $0a, $09, $39 // "N", "O" (Oscar), "K", "M", "0" (Zero), "J", "I", "9"
|
||||
.byte $2c, $00, $3a, $2e, $2d, $0c, $10, $2b // ",", "@", ":", ".", "-", "L", "P", "+"
|
||||
.byte $2f, $1e, $3d, $ff, $ff, $3b, $2a, $1c // "/", "^", "=", RIGHT SHIFT, HOME, ";", "*", "£"
|
||||
.byte $ff, $11, $ff, $20, $32, $ff, $1f, $31 // RUN STOP, "Q", "C=" (CMD), " " (SPC), "2", "CTRL", "<-", "1"
|
||||
|
||||
BufferOld:
|
||||
.byte $ff, $ff, $ff
|
||||
|
||||
Buffer:
|
||||
.byte $ff, $ff, $ff, $ff
|
||||
|
||||
BufferQuantity:
|
||||
.byte $ff
|
||||
|
||||
SimultaneousAlphanumericKeysFlag:
|
||||
.byte $00
|
||||
}
|
67
main.asm
67
main.asm
|
@ -1,4 +1,4 @@
|
|||
//BasicUpstart2(start)
|
||||
// BasicUpstart2(start)
|
||||
#import "mem_map.asm"
|
||||
|
||||
* = $8000 "Main"
|
||||
|
@ -6,9 +6,18 @@
|
|||
//------------------------------------------------------------------------------------
|
||||
.const MAIN_COLOR = $03
|
||||
.const BORDER_COLOR = $05
|
||||
.const SCREEN_MEM = $0400
|
||||
.const CR = $0d
|
||||
.const BS = $14
|
||||
.const ADV_CHAR = '@'
|
||||
.const INIT_IRQ = $fda3
|
||||
.const INIT_MEM = $fd50
|
||||
.const INIT_IO = $fd15
|
||||
.const INIT_VID = $ff5b
|
||||
.const SCRN_CTRL = $d016
|
||||
.const RASTER_LINE = $d012
|
||||
.const INTERRUPT_CTRL = $dc0d
|
||||
.const NMSK_INTERRUPT_CTRL = $dd0d
|
||||
.const TIMER_A_CTRL = $DC0E
|
||||
|
||||
//------------------------------------------------------------------------------------
|
||||
.word coldstart // coldstart vector
|
||||
|
@ -30,43 +39,50 @@ coldstart:
|
|||
sei
|
||||
txs
|
||||
cld
|
||||
stx $d016
|
||||
jsr $fda3 // Prepare IRQ
|
||||
jsr $fd50 // Init memory. Rewrite this routine to speed up boot process.
|
||||
jsr $fd15 // Init I/O
|
||||
jsr $ff5b // Init video
|
||||
stx SCRN_CTRL // Set Screen Bits
|
||||
jsr INIT_IRQ // Prepare IRQ
|
||||
jsr INIT_MEM // Init memory. Rewrite this routine to speed up boot process.
|
||||
jsr INIT_IO // Init I/O
|
||||
jsr INIT_VID // Init video
|
||||
cli
|
||||
|
||||
* = * "App Start"
|
||||
|
||||
//------------------------------------------------------------------------------------
|
||||
start:
|
||||
//sei
|
||||
|
||||
jsr initApp;
|
||||
print(lineString)
|
||||
print(testString)
|
||||
print(lineString)
|
||||
|
||||
loop:
|
||||
lda #$FF
|
||||
Raster: cmp $D012
|
||||
Raster: cmp RASTER_LINE // Raster done?
|
||||
bne Raster
|
||||
jsr Keyboard2.ReadKeyb
|
||||
jsr Keyboard2.GetKey
|
||||
bcs loop
|
||||
|
||||
|
||||
|
||||
cmp #CR
|
||||
beq cr
|
||||
beq execute
|
||||
|
||||
cmp #BS
|
||||
beq backspace
|
||||
inputChar:
|
||||
jsr Shell.push
|
||||
jsr Shell.push // Char in Buffer
|
||||
cPrint()
|
||||
jmp loop
|
||||
backspace:
|
||||
jsr Shell.backspace
|
||||
cPrint()
|
||||
jmp loop
|
||||
cr:
|
||||
jsr Shell.push
|
||||
|
||||
execute:
|
||||
jsr Shell.push // CR in Buffer
|
||||
jsr Screen.screenNewLine
|
||||
jsr Shell.wozExec
|
||||
jsr Shell.exec
|
||||
jsr Screen.screenNewLine
|
||||
jsr Shell.clear
|
||||
jmp loop
|
||||
|
@ -76,21 +92,21 @@ initApp: {
|
|||
|
||||
sei
|
||||
lda #$7f
|
||||
sta $dc0d // disable timer interrupts which can be generated by the two CIA chips
|
||||
sta $dd0d // the kernal uses such an interrupt to flash the cursor and scan the keyboard, so we better
|
||||
// stop it.
|
||||
sta INTERRUPT_CTRL // disable timer interrupts which can be generated by the two CIA chips
|
||||
sta NMSK_INTERRUPT_CTRL // the kernal uses such an interrupt to flash the cursor and scan the keyboard, so we better
|
||||
// stop it.
|
||||
|
||||
lda $dc0d // by reading this two registers we negate any pending CIA irqs.
|
||||
lda $dd0d // if we don't do this, a pending CIA irq might occur after we finish setting up our irq.
|
||||
// we don't want that to happen.
|
||||
lda INTERRUPT_CTRL // by reading this two registers we negate any pending CIA irqs.
|
||||
lda NMSK_INTERRUPT_CTRL // if we don't do this, a pending CIA irq might occur after we finish setting up our irq.
|
||||
// we don't want that to happen.
|
||||
|
||||
// Disable 0e TIMER
|
||||
lda #254
|
||||
and $dc0e
|
||||
sta $dc0e
|
||||
and TIMER_A_CTRL
|
||||
sta TIMER_A_CTRL
|
||||
|
||||
ClearColorRam($00)
|
||||
ClearScreen(SCREEN_MEM, ' ')
|
||||
ClearScreen(' ')
|
||||
SetBorderColor(BORDER_COLOR)
|
||||
SetBackgroundColor(MAIN_COLOR)
|
||||
jsr Screen.init
|
||||
|
@ -118,7 +134,8 @@ minor: .byte 05
|
|||
|
||||
testString:
|
||||
.text "woz64 mon - v 0.1.5"
|
||||
.byte $8e
|
||||
.byte $8e, 0
|
||||
lineString:
|
||||
.text "----------------------------------------"
|
||||
.byte $8e, 0
|
||||
hoaxString:
|
||||
|
|
26
memory.asm
26
memory.asm
|
@ -3,22 +3,22 @@
|
|||
* = * "Memory Routines"
|
||||
|
||||
.macro clone(from, to, dest) {
|
||||
lda #<from
|
||||
sta MemMap.MEMORY.from
|
||||
lda #>from
|
||||
sta MemMap.MEMORY.from+1
|
||||
lda #<from
|
||||
sta MemMap.MEMORY.from
|
||||
lda #>from
|
||||
sta MemMap.MEMORY.from+1
|
||||
|
||||
lda #<dest
|
||||
sta MemMap.MEMORY.dest
|
||||
lda #>dest
|
||||
sta MemMap.MEMORY.dest+1
|
||||
lda #<dest
|
||||
sta MemMap.MEMORY.dest
|
||||
lda #>dest
|
||||
sta MemMap.MEMORY.dest+1
|
||||
|
||||
lda #<to-from
|
||||
sta MemMap.MEMORY.size+1
|
||||
lda #>to-from
|
||||
sta MemMap.MEMORY.size
|
||||
lda #<to-from
|
||||
sta MemMap.MEMORY.size+1
|
||||
lda #>to-from
|
||||
sta MemMap.MEMORY.size
|
||||
|
||||
jsr Memory._clone
|
||||
jsr Memory._clone
|
||||
}
|
||||
|
||||
.filenamespace Memory
|
||||
|
|
127
screen.asm
127
screen.asm
|
@ -2,6 +2,8 @@
|
|||
#import "math.asm"
|
||||
#import "memory.asm"
|
||||
|
||||
|
||||
|
||||
// -----------------------
|
||||
// MACROS
|
||||
// -----------------------
|
||||
|
@ -9,83 +11,80 @@
|
|||
* = * "Screen Routines"
|
||||
|
||||
.macro print(stringAddr) {
|
||||
lda #<stringAddr // Low byte
|
||||
ldx #>stringAddr // High byte
|
||||
jsr Screen.print
|
||||
lda #<stringAddr // Low byte
|
||||
ldx #>stringAddr // High byte
|
||||
jsr Screen.print
|
||||
}
|
||||
|
||||
.macro cPrint() {
|
||||
jsr Screen.printPetChar
|
||||
jsr Screen.printPetChar
|
||||
}
|
||||
|
||||
.macro ClearScreen(screen, clearByte) {
|
||||
lda #clearByte
|
||||
ldx #0
|
||||
!loop:
|
||||
sta screen, x
|
||||
sta screen + $100, x
|
||||
sta screen + $200, x
|
||||
sta screen + $300, x
|
||||
inx
|
||||
bne.r !loop-
|
||||
.macro ClearChunks(baseAddress, clearByte) {
|
||||
lda #clearByte
|
||||
ldx #0
|
||||
!loop:
|
||||
sta baseAddress, x
|
||||
sta baseAddress + $100, x
|
||||
sta baseAddress + $200, x
|
||||
sta baseAddress + $300, x
|
||||
inx
|
||||
bne.r !loop-
|
||||
}
|
||||
|
||||
|
||||
.macro ClearScreen(clearByte) {
|
||||
ClearChunks(Screen.VIDEO_ADDR, clearByte)
|
||||
}
|
||||
|
||||
.macro ClearColorRam(clearByte) {
|
||||
lda #clearByte
|
||||
ldx #0
|
||||
!loop:
|
||||
sta $D800, x
|
||||
sta $D800 + $100, x
|
||||
sta $D800 + $200, x
|
||||
sta $D800 + $300, x
|
||||
inx
|
||||
bne.r !loop-
|
||||
ClearChunks(Screen.COLOR_ADDR, clearByte)
|
||||
}
|
||||
|
||||
.macro SetBorderColor(color) {
|
||||
lda #color
|
||||
sta $d020
|
||||
lda #color
|
||||
sta $d020
|
||||
}
|
||||
|
||||
.macro SetBackgroundColor(color) {
|
||||
lda #color
|
||||
sta $d021
|
||||
lda #color
|
||||
sta $d021
|
||||
}
|
||||
|
||||
.macro SetMultiColor1(color) {
|
||||
lda #color
|
||||
sta $d022
|
||||
lda #color
|
||||
sta $d022
|
||||
}
|
||||
|
||||
.macro SetMultiColor2(color) {
|
||||
lda #color
|
||||
sta $d023
|
||||
lda #color
|
||||
sta $d023
|
||||
}
|
||||
|
||||
.macro SetMultiColorMode() {
|
||||
lda $d016
|
||||
ora #16
|
||||
sta $d016
|
||||
lda $d016
|
||||
ora #16
|
||||
sta $d016
|
||||
}
|
||||
|
||||
.macro SetScrollMode() {
|
||||
lda $D016
|
||||
eor #%00001000
|
||||
sta $D016
|
||||
lda $D016
|
||||
eor #%00001000
|
||||
sta $D016
|
||||
}
|
||||
|
||||
.filenamespace Screen
|
||||
|
||||
|
||||
// -----------------------
|
||||
//------------------------------------------------------------------------------------
|
||||
// CONSTANTS
|
||||
// -----------------------
|
||||
|
||||
.const VIDEO_ADDR = $0400
|
||||
.const COLUMN_NUM = 40
|
||||
.const ROWS_NUM = 25
|
||||
.const CR = $8e
|
||||
.const BS = $95
|
||||
//------------------------------------------------------------------------------------
|
||||
.label VIDEO_ADDR = $0400
|
||||
.label COLOR_ADDR = $D800
|
||||
.label COLUMN_NUM = 40
|
||||
.label ROWS_NUM = 25
|
||||
.label CR = $8e
|
||||
.label BS = $95
|
||||
|
||||
|
||||
|
||||
|
@ -104,12 +103,12 @@ scrollUp: {
|
|||
clone(VIDEO_ADDR+40, VIDEO_ADDR+(COLUMN_NUM*(ROWS_NUM)), VIDEO_ADDR)
|
||||
|
||||
// clear last line
|
||||
lda #32
|
||||
ldx #40
|
||||
lda #32
|
||||
ldx #40
|
||||
!:
|
||||
sta VIDEO_ADDR+(COLUMN_NUM*(ROWS_NUM-1)), x
|
||||
dex
|
||||
bne !-
|
||||
bpl !- // x == -1
|
||||
dec MemMap.SCREEN.CursorRow
|
||||
pla
|
||||
rts
|
||||
|
@ -130,6 +129,7 @@ printPetChar: {
|
|||
|
||||
//------------------------------------------------------------------------------------
|
||||
printChar: {
|
||||
sei
|
||||
stx MemMap.SCREEN.tempX
|
||||
cmp #CR
|
||||
bne.r !+
|
||||
|
@ -194,11 +194,11 @@ noEndOfLine:
|
|||
pla
|
||||
|
||||
// This is a backspace
|
||||
cmp #BS
|
||||
bne !+
|
||||
lda #' '
|
||||
cmp #BS
|
||||
bne !+
|
||||
lda #' '
|
||||
sta (MemMap.SCREEN.TempVideoPointer), y
|
||||
jmp exit
|
||||
jmp exit
|
||||
|
||||
!:
|
||||
// insert into screen
|
||||
|
@ -209,6 +209,7 @@ noEndOfLine:
|
|||
|
||||
exit:
|
||||
ldx MemMap.SCREEN.tempX
|
||||
cli
|
||||
rts
|
||||
}
|
||||
|
||||
|
@ -223,17 +224,17 @@ noEndOfLine:
|
|||
// returned values: none
|
||||
// ——————————————————————————————————————————————————————
|
||||
print: {
|
||||
ldy #$00
|
||||
sta MemMap.SCREEN.TempStringPointer
|
||||
stx MemMap.SCREEN.TempStringPointer+1
|
||||
printLoop:
|
||||
lda (MemMap.SCREEN.TempStringPointer), y
|
||||
cmp #0
|
||||
beq exit
|
||||
jsr Screen.printChar
|
||||
jmp printLoop
|
||||
exit:
|
||||
rts
|
||||
ldy #$00
|
||||
sta MemMap.SCREEN.TempStringPointer
|
||||
stx MemMap.SCREEN.TempStringPointer+1
|
||||
printLoop:
|
||||
lda (MemMap.SCREEN.TempStringPointer), y
|
||||
cmp #0
|
||||
beq exit
|
||||
jsr Screen.printChar
|
||||
jmp printLoop
|
||||
exit:
|
||||
rts
|
||||
}
|
||||
|
||||
|
||||
|
|
51
shell.asm
51
shell.asm
|
@ -37,6 +37,41 @@ backspace: {
|
|||
rts
|
||||
}
|
||||
|
||||
exec: {
|
||||
lda MemMap.SHELL.buffer // Check first char
|
||||
cmp #'!'
|
||||
beq stidExec // if ! is stid mon command
|
||||
jmp wozExec // Otherwise exec Woz
|
||||
// Expect exec functions to RTS
|
||||
}
|
||||
|
||||
|
||||
stidExec: {
|
||||
.break
|
||||
ldy #1
|
||||
|
||||
lda MemMap.SHELL.buffer, y
|
||||
|
||||
cmp #'h'
|
||||
beq cmdHelp
|
||||
|
||||
cmp #'r'
|
||||
beq cmdReset
|
||||
|
||||
done:
|
||||
rts
|
||||
|
||||
cmdHelp:
|
||||
print(helpString)
|
||||
jmp done
|
||||
|
||||
cmdReset:
|
||||
jmp $fce2 // SYS 64738
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
// WOZ MONITOR FLOW - FROM APPLE1
|
||||
wozExec: {
|
||||
|
@ -194,4 +229,20 @@ PRHEX: and #%00001111 // Mask LSD for hex prin
|
|||
|
||||
}
|
||||
|
||||
//------------------------------------------------------------------------------------
|
||||
* = * "Shell Data"
|
||||
|
||||
.encoding "screencode_mixed"
|
||||
|
||||
helpString:
|
||||
.text "----------------------"
|
||||
.byte $8e
|
||||
.text "h : this help"
|
||||
.byte $8e
|
||||
.text "r : hard reset"
|
||||
.byte $8e
|
||||
.text "z : zero page params"
|
||||
.byte $8e, 0
|
||||
|
||||
|
||||
#import "mem_map.asm"
|
||||
|
|
Loading…
Reference in New Issue