mirror of
https://github.com/fadden/6502bench.git
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1178 lines
28 KiB
Plaintext
1178 lines
28 KiB
Plaintext
********************************
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* *
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* ZipGS Control Program *
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* By Andy McFadden *
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* v1.0 11-Dec-91 *
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* v1.1 14-Dec-91 *
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* *
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* Merlin assembler format *
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* *
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* This program is in the *
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* public domain. *
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* *
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********************************
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lst off
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*
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* This program uses the "lean & mean" approach to
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* screen displays. Not much choice if we want to
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* split the colors; we have to do all processing in
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* the vbl period. Tough to modify, but hey, that's
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* life in the big city.
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*
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XC ;allow 65c02 opcodes
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XC ;allow 65c816 opcodes
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*
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* Zero page
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*
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tmp equ $00
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ptr equ $02
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ptr2 equ $04
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*
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* Firmware equates
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*
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kbd equ $c000
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clr80col equ $c000 ;disable 80-column store
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clr80vid equ $c00c ;disable 80-column hardware
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clraltchar equ $c00e ;normal lc, flashing UC
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clrkbd equ $c010
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tbcolor equ $c022 ;low 4 are bkgnd, hi 4 are text
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vertcnt equ $c02e ;vertical line counter
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click equ $c030
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cyareg equ $c036 ;controls speed, shadowing
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rom equ $c082
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*
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* ZipGS equates
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* (the choice of names is arbitrary and occasionally misleading)
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*
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reset equ $c058 ;R=nop, W=force reset
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options equ $c059 ;R/W=bit options
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lock equ $c05a ;R=get speed, W=lock/unlock
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enable equ $c05b ;R=bit options, W=enable card
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slotenab equ $c05c ;R/W=slot/speaker enable
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speed equ $c05d ;R=bank, W=set speed
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tag1 equ $c05e ;(stuff)
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tag2 equ $c05f ;(stuff)
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*
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* Monitor equates
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*
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setreset equ $fb6f
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bell equ $fbdd
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home equ $fc58
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wait equ $fca8
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prbyte equ $fdda
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setkbd equ $fe89
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setvid equ $fe93
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monitor equ $ff59
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*
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* Program
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*
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org $2000 ;this is a SYS file
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jmp startup
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dfb $ee ;ProDOS startup protocol
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dfb $ee
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dfb $41 ;65 bytes of space
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stval dfb $00 ;we look here+1 (this is len)
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ds $40
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startup
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lda rom
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sta clr80col ;disable 80-col store
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sta clr80vid ;disable 80-col hardware
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sta clraltchar ;disable MouseText
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lda clrkbd
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jsr setkbd
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jsr setvid
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jsr home
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* unlock the ZipGS registers
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lda #$50
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sta lock
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sta lock
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sta lock
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sta lock
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* check the startup protocol stuff
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lda stval+1
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beq :nostartup
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ora #$80 ;set hi bit
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cmp #$e0
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blt :isupper1
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sec
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sbc #$20 ;convert to upper case
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:isupper1
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cmp #"E" ;enable?
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bne :noten
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stz enable
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brl quit
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:noten
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cmp #"D" ;disable?
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bne :notdi
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stz lock
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brl quit
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:notdi ;unknown; ignore it
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:nostartup
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* initialize variables and the screen
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lda lock
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and #$f0
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lsr A
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lsr A
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lsr A
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lsr A
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sta zip_lock
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sta ent_lock
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lda enable
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sta zip_enb
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sta ent_enb
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lda slotenab
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sta zip_slot
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sta ent_slot
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lda options
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sta zip_opts
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sta ent_opts
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* enable the zip, and set it to max speed
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stz enable ;enable
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stz speed ;100%
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* draw initial screen
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lda tbcolor
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sta cc1
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sta cc2
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jsr calc_speed
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jsr draw_scrn
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jsr draw_speed
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jsr draw_opts
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jsr draw_slot
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:loop
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jsr color_scrn
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lda kbd
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cmp #$e0
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blt :isupper
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sec
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sbc #$20 ;convert to upper case
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:isupper
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cmp #"!" ;secret option
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bne :notbang
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lda zip_cyc+1
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jsr prbyte
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lda zip_cyc
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jsr prbyte
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bra :loop
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:notbang
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cmp #"D"
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bne :notD
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lda #$10
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tsb zip_enb ;mark as disabled (1)
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jsr draw_opts ;update options
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bra :loop
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:notD
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cmp #"E"
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bne :notE
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lda #$10
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trb zip_enb ;mark as enabled (0)
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jsr draw_opts ;update options
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bra :loop
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:notE
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cmp #$8a ;down arrow
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beq :isslow
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cmp #$88 ;left arrow
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bne :notslow
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:isslow lda zip_lock
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inc A
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cmp #$10 ;at max?
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beq :loop ;yes, don't update
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sta zip_lock
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jsr draw_speed
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bra :loop
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:notslow
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cmp #$8b ;up arrow
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beq :isfast
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cmp #$95 ;right arrow
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bne :notfast
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:isfast lda zip_lock
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dec A
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bmi :loop ;under 0, don't update
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sta zip_lock
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jsr draw_speed
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bra :loop
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:notfast
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cmp #"B"
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bne :notb
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lda zip_opts
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eor #$80
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sta zip_opts
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jsr draw_opts
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bra :loop
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:notb
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cmp #"P"
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bne :notp
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lda zip_opts
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eor #$40
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sta zip_opts
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jsr draw_opts
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brl :loop
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:notp
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cmp #"A"
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bne :nota
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lda zip_opts
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eor #$20
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sta zip_opts
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jsr draw_opts
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brl :loop
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:nota
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cmp #"C"
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bne :notc
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lda zip_opts
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eor #$10
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sta zip_opts
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jsr draw_opts
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brl :loop
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:notc
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cmp #"F"
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bne :notf
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lda zip_opts
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eor #$08
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sta zip_opts
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jsr draw_opts
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brl :loop
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:notf
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cmp #"S"
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bne :nots
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lda zip_slot
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eor #$01
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sta zip_slot
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jsr draw_slot
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brl :loop
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:nots
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cmp #"1"
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blt :notnum
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cmp #"8"
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bge :notnum
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sec
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sbc #"0" ;convert "1"-"7" to 1-7
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tax
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lda #$01
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:sloop asl A ;want bits 1-7 in mask
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dex
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bne :sloop
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sta tmp
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lda zip_slot ;no toggle the slot status
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eor tmp
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sta zip_slot
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jsr draw_slot
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brl :loop
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:notnum
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cmp #$8d ;carriage return
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bne :notret
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jsr update_zip ;write stuff to zip
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bra quit
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:notret
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cmp #$9b ;escape
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bne :notesc
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lda ent_enb ;restore entry values
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sta zip_enb
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lda ent_lock
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sta zip_lock
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lda ent_slot
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sta zip_slot
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lda ent_opts
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sta zip_opts
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jsr update_zip
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bra quit
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:notesc
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* unknown key; make a tiny noise
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* (don't forget, we're still in the vbl!)
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lda click
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lda #$01
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jsr wait
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lda click
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brl :loop
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*
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* Quit to ProDOS
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*
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quit
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lda #$a0
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sta lock ;lock the registers
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sta clrkbd
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jsr home
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jsr $bf00 ;execute MLI Quit call
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dfb $65
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dw Quit_p
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Quit_p dfb $04
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dfb 0,0,0,0,0,0,0,0
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*
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* Make changes
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*
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update_zip
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lda zip_enb
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and #$10 ;clear all but board disable
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beq :enab
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stz lock ;disable board
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bra :cont
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:enab stz enable ;enable board
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:cont lda zip_lock ;get current speed
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asl A ;shift it back
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asl A
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asl A
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asl A
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sta speed ;set speed
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lda zip_opts
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sta options
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lda zip_slot
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sta slotenab
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rts
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*
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* Draw the initial screen
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*
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draw_scrn
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* Embed the cache size in the static string
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lda enable
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and #$03 ;only want low two bits
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asl A
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tay ;two bytes/entry
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lda :cache_tab,y
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sta statline+12
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iny
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lda :cache_tab,y
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sta statline+13
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* draw the rest of the display
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:drawit
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lda #<:screen_data
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sta ptr
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lda #>:screen_data
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sta ptr+1
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:loop
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lda (ptr)
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sta ptr2
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ldy #$01
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lda (ptr),y
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sta ptr2+1
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beq :done
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clc ;need Y-reg to start at 0
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lda ptr
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adc #$02
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sta ptr
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lda ptr+1
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adc #$00
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sta ptr+1
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dey ;back to zero
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:txtloop
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lda (ptr),y
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beq :txtdone
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sta (ptr2),y
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iny
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bra :txtloop
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:txtdone
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iny ;advance ptr according to Y
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tya ;(could have >256 bytes of data)
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clc
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adc ptr
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sta ptr
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lda ptr+1
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adc #$00
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sta ptr+1
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bra :loop
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:done
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rts
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* table of cache sizes
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:cache_tab
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asc " 8163264"
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* initial screen data
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:screen_data
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dw $500+1 ;line 1, column 1
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asc "ZipGS Control v1.1 By Andy McFadden",00
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dw $680+1 ;line 5, column 1
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statline asc "Your MHz/ K ZipGS is ",00
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dr_enab equ $680+26
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dw $780+5
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asc "Slot 1:",00
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dw $428+5
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asc "Slot 2:",00
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dw $4a8+5
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asc "Slot 3:",00
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dw $528+5
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asc "Slot 4:",00
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dw $780+21
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asc "Slot 5:",00
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dw $428+21
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asc "Slot 6:",00
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dw $4a8+21
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asc "Slot 7:",00
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dw $528+21
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asc "Speakr:",00
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dw $628+1
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asc "Bank Switch LC cache:",00
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dr_optb equ $628+23
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dw $6a8+1
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asc "Paddle Delay:",00
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dr_optp equ $6a8+15
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dw $6a8+21
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asc "AppleTalk Dl:",00
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dr_opta equ $6a8+35
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dw $728+1
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asc "Counter Del :",00
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dr_optc equ $728+15
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dw $728+21
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asc "Follow CPS :",00
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dr_optf equ $728+35
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dw $4d0+3
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asc "[ ]",00
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dr_spdbar equ $4d0+4
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dw $550+0
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asc "________________________________________",00
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dw $650+3 ;line 19, column 2
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asc "E:Enable D:Disable Arrows:Speed",00
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dw $6d0+3 ;line 20, column 2
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asc "1-7:Slot S:Speaker BPACF:Option",00
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dw $750+1 ;line 22, column 1
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asc "Return stores and exits, Escape aborts",00
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dw 0 ;end of list
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*
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* Draw speed-related info
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* (percent, MHz, the speed bar, etc)
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*
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draw_speed
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* insert percent of max into speed bar
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lda zip_lock ;get current zip speed
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asl A
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asl A
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asl A ;want it x8
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tay
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ldx #$00
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:ploop lda :perc_tab,y
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sta :speed+5,x
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iny
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inx
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cpx #$06 ;6 chars each
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blt :ploop
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* print MHz
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clc
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xce
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rep #$30 ;16 bits for both
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mx %00
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lda zip_mhz
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and #$00ff ;ignore zip_mhz+1
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xba ;mult * 256
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sta tmp
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lsr A
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lsr A
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lsr A
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lsr A ;now only x16
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sta ptr
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lda zip_lock ;for each tick, drop 1/16th
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and #$00ff
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tax
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inx
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lda tmp
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:subloop dex
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beq :subdone ;don't subtract on 100%
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sec
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sbc ptr
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bra :subloop
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:subdone sta tmp ;now result = MHz * 256
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ldx #$00a0
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stx ptr ;leftmost char
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and #$ff00
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cmp #$0a00
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blt :ok
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sec
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sbc #$0a00 ;subtract 10
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ldx #"1"
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stx ptr
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:ok
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clc
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adc #"0"*256
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ora ptr ;put space or 1 on left
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sta :speed+18 ;(16-bit store)
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* We got the whole number okay, now we need the
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* fractional percentage. This burns a few cycles
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* here... not pretty neither. What we want to do
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* is convert 0-255 in the low byte of tmp to 0-99.
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*
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* We count 0-255 or less, incrementing twice every five,
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* and subtracting one every 64. We get roughly 0-99.
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* This is reasonably accurate, within +/- .02.
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sep #$30 ;short acc, short xy
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mx %11
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sec ;return to emulation mode
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xce
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stz ptr
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lda tmp ;exactly zero?
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beq :iszero
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ldy #$05 ;counting 5-1, from first
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lda #$02
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sta ptr ;result; start at two
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lda #$00
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sed ;how often do you see this?
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:xloop
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inc A
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sta ptr+1 ;save counter
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and #$3f ;divisible by 64?
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bne :not64 ;nope
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lda ptr
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sec
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sbc #$01 ;have to sbc for decimal mode
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sta ptr
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:not64
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dey
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bne :not5
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lda ptr
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clc
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adc #$02 ;add two
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sta ptr
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ldy #$05 ;reset Y
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:not5
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lda ptr+1
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cmp tmp ;the base 16 fraction
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blt :xloop
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cld ;very important!
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:iszero
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lda ptr ;now that we've got it,
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tax ; store it.
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and #$f0
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lsr A
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lsr A
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lsr A
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lsr A
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clc
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adc #"0"
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sta :speed+21
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txa
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and #$0f
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clc
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adc #"0"
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sta :speed+22
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* draw the speed thermometer bar
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lda #$10
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sec
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sbc zip_lock
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tax ;now x has 1=6.25%, 10=100%
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lda #$3f ;inverse mode AND mask
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sta tmp ;AND mask
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ldy #$00
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:bloop
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lda :speed,y
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and tmp
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sta dr_spdbar,y
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iny
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lda :speed,y
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and tmp
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sta dr_spdbar,y
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iny
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dex
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bne :not0
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lda #$ff ;X hit 0, so switch to normal
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sta tmp
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:not0 cpy #32 ;2 * 16 settings
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blt :bloop
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rts
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* table of percentages, padded to 8 bytes each
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:perc_tab
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asc "100.00",0000
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asc " 93.75",0000
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asc " 87.50",0000
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asc " 81.25",0000
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asc " 75.00",0000
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asc " 68.75",0000
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asc " 62.50",0000
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asc " 56.25",0000
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asc " 50.00",0000
|
|
asc " 43.75",0000
|
|
asc " 37.50",0000
|
|
asc " 31.25",0000
|
|
asc " 25.00",0000
|
|
asc " 18.75",0000
|
|
asc " 12.50",0000
|
|
asc " 6.25",0000
|
|
|
|
* text for speed bar
|
|
:speed asc " xxx.xx% xx.xx MHZ ",00
|
|
|
|
|
|
*
|
|
* Draw options
|
|
* (enabled/disabled, external delay, etc)
|
|
*
|
|
draw_opts
|
|
* Start with board enable/disable. We do this one
|
|
* specially (print "enabled." instead of "enab").
|
|
* Easier to special case than do "right".
|
|
lda zip_enb
|
|
and #$10 ;want bit 4
|
|
beq :enb
|
|
|
|
lda #<:disabled_txt
|
|
sta ptr
|
|
lda #>:disabled_txt
|
|
sta ptr+1
|
|
bra :copy
|
|
:enb
|
|
lda #<:enabled_txt
|
|
sta ptr
|
|
lda #>:enabled_txt
|
|
sta ptr+1
|
|
|
|
:copy ldy #$00
|
|
:loop lda (ptr),y
|
|
beq :done
|
|
sta dr_enab,y
|
|
iny
|
|
bra :loop
|
|
:done
|
|
|
|
* now do each of the other five (bpacf)
|
|
lda #<dr_optb
|
|
sta ptr2
|
|
lda #>dr_optb
|
|
sta ptr2+1
|
|
lda #$80
|
|
jsr draw_enab
|
|
|
|
lda #<dr_optp
|
|
sta ptr2
|
|
lda #>dr_optp
|
|
sta ptr2+1
|
|
lda #$40
|
|
jsr draw_enab
|
|
|
|
lda #<dr_opta
|
|
sta ptr2
|
|
lda #>dr_opta
|
|
sta ptr2+1
|
|
lda #$20
|
|
jsr draw_enab
|
|
|
|
lda #<dr_optc
|
|
sta ptr2
|
|
lda #>dr_optc
|
|
sta ptr2+1
|
|
lda #$10
|
|
jsr draw_enab
|
|
|
|
lda #<dr_optf
|
|
sta ptr2
|
|
lda #>dr_optf
|
|
sta ptr2+1
|
|
lda #$08
|
|
jmp draw_enab
|
|
|
|
:disabled_txt
|
|
asc "disabled.",00
|
|
:enabled_txt
|
|
asc "enabled. ",00
|
|
|
|
* draw_opts subroutine
|
|
draw_enab
|
|
sta tmp ;save the mask
|
|
lda zip_opts ;get ZipGS options register
|
|
and tmp ;strip off the boring ones
|
|
bne :enb ;note: reverse of board enb
|
|
|
|
lda #<:disb_txt
|
|
sta ptr
|
|
lda #>:disb_txt
|
|
sta ptr+1
|
|
bra :copy
|
|
:enb
|
|
lda #<:enab_txt
|
|
sta ptr
|
|
lda #>:enab_txt
|
|
sta ptr+1
|
|
|
|
:copy ldy #$03
|
|
:loop lda (ptr),y
|
|
sta (ptr2),y
|
|
dey
|
|
bpl :loop
|
|
|
|
rts
|
|
|
|
:enab_txt asc "enab"
|
|
:disb_txt asc "disb"
|
|
|
|
*
|
|
* Draw slot info
|
|
*
|
|
draw_slot
|
|
ldx #$00
|
|
lda #$02 ;bit 2 = slot 1
|
|
|
|
:loop
|
|
sta tmp
|
|
lda :dr_slot,x
|
|
sta ptr
|
|
lda :dr_slot+1,x
|
|
sta ptr+1
|
|
lda zip_slot
|
|
and tmp
|
|
beq :disb
|
|
|
|
:enb lda #<:slow_txt
|
|
sta ptr2
|
|
lda #>:slow_txt
|
|
sta ptr2+1
|
|
bra :copy
|
|
|
|
:disb lda #<:fast_txt
|
|
sta ptr2
|
|
lda #>:fast_txt
|
|
sta ptr2+1
|
|
|
|
:copy ldy #$03
|
|
:cloop lda (ptr2),y
|
|
sta (ptr),y
|
|
dey
|
|
bpl :cloop
|
|
inx
|
|
inx
|
|
cpx #16
|
|
bge :done
|
|
lda tmp
|
|
asl A
|
|
bcc :loop
|
|
lda #$01 ;go back and do speaker delay
|
|
bra :loop
|
|
|
|
:done
|
|
rts
|
|
|
|
:dr_slot
|
|
dw $780+13 ;slot 1
|
|
dw $428+13
|
|
dw $4a8+13
|
|
dw $528+13 ;...
|
|
dw $780+29
|
|
dw $428+29
|
|
dw $4a8+29 ;slot 7
|
|
dw $528+29 ;speaker delay
|
|
|
|
:slow_txt asc "Slow"
|
|
:fast_txt asc "Fast"
|
|
|
|
|
|
*
|
|
* Calculate the max ZipGS speed
|
|
*
|
|
* I pulled this out of the source for the Zip S16
|
|
* program. I don't pretend to understand most of
|
|
* what this does. If you figure it out, send me a
|
|
* note...
|
|
*
|
|
calc_speed
|
|
clc
|
|
xce ;set native mode
|
|
rep #$30 ;16 bits
|
|
mx %00
|
|
|
|
stz :ascii ;clear the output buffer
|
|
stz :ascii+2
|
|
stz :ascii+4
|
|
stz :ascii+6
|
|
jsr getspeed ;do the actual speed calc
|
|
|
|
lda result ;result is decimal speed,
|
|
sta zip_cyc ; so convert to a decimal
|
|
pha ; string
|
|
pea $0000 ;hiaddr
|
|
pea :ascii ;loaddr
|
|
pea $0006 ;length
|
|
pea $0000 ;unsigned
|
|
ldx #$260b ;_Int2Dec
|
|
jsl $e10000
|
|
|
|
sep #$30 ;back to emulation mode
|
|
mx %11
|
|
sec
|
|
xce
|
|
|
|
* at this point, the buffer would contain "8005" for
|
|
* a speed of 8.005. This reduces it to "8.00".
|
|
ldy #$ff
|
|
:loop iny
|
|
lda :ascii,y ;seek to end
|
|
cmp #$00
|
|
bne :loop
|
|
|
|
lda #$20
|
|
sta :ascii-1,y ;kill last char
|
|
sta :ascii,y ;extend length by one
|
|
lda #$00
|
|
sta :ascii+2,y
|
|
|
|
dey ;now scoot the two decimal
|
|
ldx #$02 ; places over by one to make
|
|
:loop2 dey ; room for the period
|
|
lda :ascii,y
|
|
sta :ascii+1,y
|
|
dex
|
|
bne :loop2
|
|
|
|
lda #$2e ;stuff the decimal point in
|
|
sta :ascii,y
|
|
|
|
* now it's in a format which makes output nice. We
|
|
* want it in a numeric format too, so...
|
|
stz zip_mhz ;init to zero
|
|
lda :ascii-2,y ;10s column
|
|
ora #$80 ;set hi bit
|
|
sta statline+5 ;stuff it into static string
|
|
cmp #"1" ;is it a 1 (not expecting 25)
|
|
bne :lt10 ;yes, we're less than 10
|
|
lda #10
|
|
sta zip_mhz
|
|
:lt10
|
|
lda :ascii-1,y ;1s column
|
|
ora #$80 ;set hi bit
|
|
sta statline+6 ;stuff it
|
|
sec
|
|
sbc #"0" ;convert to numeric
|
|
clc
|
|
adc zip_mhz ;add to what we got already
|
|
sta zip_mhz
|
|
|
|
* (this was confusing... the speed bar assumes a max
|
|
* speed of x.00, and goes from there. If this showed
|
|
* 9.10 MHz and the speed bar said 9.00 MHz, it wouldn't
|
|
* make much sense. Easier to omit it than explain it.)
|
|
*
|
|
* lda :ascii+1,y ;0.1 column
|
|
* ora #$80
|
|
* sta statline+8
|
|
* lda :ascii+2,y :0.01 column
|
|
* ora #$80
|
|
* sta statline+9
|
|
|
|
rts
|
|
|
|
:ascii ds 10
|
|
|
|
|
|
*
|
|
* This is the meat of the speed calculator.
|
|
*
|
|
getspeed
|
|
mx %00 ;still 16 bits on entry
|
|
stz result
|
|
|
|
* I think this forces the card to cache us
|
|
ldy #$00ae
|
|
:loop lda :loop,y
|
|
dey
|
|
bne :loop
|
|
|
|
php
|
|
sei
|
|
sep #$30
|
|
mx %11 ;back to 8 bits
|
|
|
|
* set up the board and /gs firmware
|
|
lda cyareg
|
|
sta :save_cya
|
|
and #$7f ;set slow mode (!)
|
|
sta cyareg
|
|
|
|
* lda #$5a
|
|
* sta lock
|
|
* sta lock
|
|
* sta lock
|
|
* sta lock
|
|
lda #$00 ;FIX me
|
|
sta speed ;set 100% speed
|
|
sta enable ;enable board
|
|
lda options
|
|
sta :save_opts
|
|
and #$d7 ;disable ext del, CPS
|
|
sta options
|
|
|
|
* now we do something weird
|
|
lda #$80
|
|
sta tag1 ;this is a no-op?
|
|
lda #$00
|
|
sta tag1 ; (should clear cshupd)
|
|
|
|
* now we get down and get funky
|
|
rep #$30
|
|
mx %00
|
|
ldy #$0064
|
|
ldx #$0000
|
|
|
|
:loop1 ldal lock
|
|
bpl :loop1
|
|
:loop2 ldal lock
|
|
bmi :loop2
|
|
:loop3 ldal lock
|
|
bpl :loop3
|
|
|
|
:loop4 txa
|
|
ldx #$0005
|
|
:delay1 dex
|
|
bne :delay1
|
|
nop
|
|
nop
|
|
|
|
clc
|
|
adc #$0001
|
|
tax
|
|
ldal lock
|
|
bmi :loop4
|
|
|
|
dey
|
|
bne :loop3
|
|
|
|
txa
|
|
clc
|
|
adc #$0005
|
|
sta result ;ta-da!
|
|
|
|
sep #$20
|
|
mx %10 ;short a, long x
|
|
lda :save_opts
|
|
sta options
|
|
lda :save_cya
|
|
sta cyareg
|
|
* lda #$a5
|
|
* sta lock
|
|
rep #$20
|
|
plp
|
|
|
|
rts
|
|
|
|
:save_cya dfb $00
|
|
:save_opts dfb $00
|
|
result dw $0000
|
|
mx %11 ;short acc/regs after this
|
|
|
|
|
|
*
|
|
* Variable data stash
|
|
*
|
|
zip_mhz dfb $00 ;6-10 MHz
|
|
zip_cyc dw $0000 ;raw #of cycles counted
|
|
zip_enb dfb $00 ;what ENABLE should be
|
|
zip_lock dfb $00 ;what LOCK should look like (/16)
|
|
zip_slot dfb $00 ;what SLOTENAB should look like
|
|
zip_opts dfb $00 ;what OPTIONS should look like
|
|
ent_enb dfb $00 ;ENABLE on entry
|
|
ent_lock dfb $00 ;LOCK on entry
|
|
ent_slot dfb $00 ;SLOTENAB on entry
|
|
ent_opts dfb $00 ;OPTIONS on entry
|
|
|
|
|
|
********************************
|
|
* *
|
|
* Fancy text routines *
|
|
* (See FancyText demo for doc) *
|
|
* *
|
|
********************************
|
|
color_scrn
|
|
|
|
*
|
|
* Colors are:
|
|
* $00 - Black $08 - Brown
|
|
* $01 - Deep red $09 - Orange
|
|
* $02 - Deep blue $0a - Light gray
|
|
* $03 - Purple $0b - Pink
|
|
* $04 - Dark green $0c - Green
|
|
* $05 - Dark gray $0d - Yellow
|
|
* $06 - Medium blue $0e - Aquamarine
|
|
* $07 - Light blue $0f - White
|
|
*
|
|
|
|
* setup
|
|
lda #<color_data
|
|
sta ptr
|
|
lda #>color_data
|
|
sta ptr+1
|
|
lda tbcolor ;save current text/background color
|
|
pha
|
|
|
|
lda clrkbd ;clear keyboard status
|
|
|
|
* main loop
|
|
:main_loop
|
|
lda kbd ;key hit?
|
|
bmi :done ;yup, exit
|
|
|
|
ldy #$00
|
|
lda (ptr),y ;get count
|
|
beq :main_loop ;count == 0, so wait for key
|
|
|
|
tax
|
|
iny
|
|
|
|
* this is important part... shift bits around,
|
|
* wait for right time, and change.
|
|
|
|
:color_loop
|
|
lda (ptr),y ;get color
|
|
pha ;save for later
|
|
iny
|
|
|
|
lda (ptr),y ;get line
|
|
asl A ;mult x4
|
|
asl A ;8 lines per, but one bit in horicnt
|
|
clc
|
|
adc #$80 ;add 128, just because
|
|
iny
|
|
|
|
:wait_loop ;wait until scanner reaches line
|
|
cmp vertcnt ;4
|
|
bne :wait_loop ;3
|
|
|
|
pla ;3 found it, so change color
|
|
sta tbcolor ;4
|
|
|
|
dex ;all done with changes?
|
|
bne :color_loop ;nope, keep going
|
|
|
|
* done with colors, so branch back to top of main loop
|
|
bra :main_loop
|
|
|
|
* all done, so restore color and exit
|
|
:done
|
|
pla
|
|
sta tbcolor
|
|
rts
|
|
|
|
*
|
|
* Data
|
|
*
|
|
color_data
|
|
dfb $07 ;7 regions
|
|
cc1 dfb $00 ;to be set to current color
|
|
dfb 0 ;starting at line 0
|
|
dfb $0f ;black text/white bkgnd
|
|
dfb 1 ;starting at line 1
|
|
dfb $f6 ;white text/blue bkgnd
|
|
dfb 4 ;starting at line 4
|
|
dfb $d6 ;yellow text/blue bkgnd
|
|
dfb 17 ;starting at line 9
|
|
dfb $c6 ;green text/blue bkgnd
|
|
dfb 18 ;starting at line 18
|
|
dfb $f6 ;white text/blue bkgnd
|
|
dfb 19 ;starting at line 19
|
|
cc2 dfb $00 ;current color
|
|
dfb 23 ;line 23 (one up from bottom)
|
|
|
|
*
|
|
* Save the object file
|
|
*
|
|
lst on
|
|
typ $ff ;make it a SYS file
|
|
sav ZIPPY
|
|
lst off ;suppress symbol table
|
|
|
|
|
|
END ;ignore everything else
|
|
|
|
*
|
|
* Zip GS tech info
|
|
*
|
|
* I got this from David Empson, who get it from Zip Technologies.
|
|
*
|
|
|
|
* ZipChip GS Special Registers Ex ZIP Technology, 12 October 1990
|
|
*
|
|
* Registers must be unlocked before they can be accessed (see $C05A).
|
|
* Locking them will re-enable the annunciators.
|
|
*
|
|
* Writing to any I/O location $C058-$C05F (whether registers are locked or
|
|
* unlocked) will reset delay in progress.
|
|
*
|
|
* $C058 R No operation
|
|
*
|
|
* $C058 W Write any value to force poweron/reset bit to COLD (forces next
|
|
* reset to restore ZIP registers to defaults/switch settings).
|
|
*
|
|
* $C059 R/W 76543210
|
|
* *....... Bank Switch Language Card cache disable=1/enable=0?
|
|
* .*...... Paddle delay (5 ms) disable=0/enable=1 $C070/$C020
|
|
* ..*..... External delay (5 ms) disable=0/enable=1
|
|
* ...*.... Counter delay (5 ms) disable=0/enable=1 $C02E/$C07E
|
|
* ....*... CPS follow disable=0/enable=1
|
|
* .....*.. Last Reset warm? READ ONLY
|
|
* ......*. Hardware DMA READ ONLY
|
|
* .......* non-GS (0)/GS (1) READ ONLY
|
|
*
|
|
* $C05A R 76543210
|
|
* ****.... Current ZIP Speed, 0=100%, F=6.25%, in 6.25% increments
|
|
* ....1111
|
|
*
|
|
* $C05A W Write values as follows:
|
|
* $5x Unlock ZIP registers (must write 4 times)
|
|
* $Ax Lock ZIP registers
|
|
* other Force ZIP to follow system clock (i.e. disable card)
|
|
*
|
|
* $C05B R 76543210
|
|
* *....... 1msclk - clock with 1 ms period
|
|
* .*...... cshupd - Tag data at $C05F updated (read $C05F to reset)
|
|
* ..*..... Bank Switch Language Card cache (0), don't (1)
|
|
* ...*.... Board disable - 0=enabled, 1=disabled
|
|
* ....*... delay in effect (0=ZIP, 1=Slow)
|
|
* .....*.. rombank (0/1) - not in development version
|
|
* ......** Cache RAM size (00=8k, 01=16k, 10=32k, 11=64k)
|
|
*
|
|
* $C05B W Write any value to force ZIP to current speed (i.e. enable card)
|
|
*
|
|
* $C05C R/W 76543210
|
|
* *******. Slot 7-1 delay enable (all slots 52-54 ms)
|
|
* .......* Speaker delay enable (5 ms)
|
|
*
|
|
* $C05D R Current 65816 bank
|
|
*
|
|
* $C05D W 76543210
|
|
* ****.... Set ZIP speed, 0=100%, F=6.25%, in 6.25% increments
|
|
* ....**** Don't care
|
|
*
|
|
* $C05E R Read last Tag data written and force the next write to
|
|
* create a trash tag value.
|
|
*
|
|
* $C05E W No operation
|
|
*
|
|
* $C05F R Read last Tag data written and reset cshupd. Note: apparently
|
|
* any write to a ZIP register (unlocked) will clear cshupd, but cshupd says
|
|
* that this location must be read.
|
|
*
|
|
* $C05F W No operation
|