More Fkey handling
This commit is contained in:
Joshua Bell
parent
a576f70f2a
commit
d624435d7f
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@ -85,6 +85,8 @@ OLDBASL := $77B
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TEMP2 := $7FB
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OLDBASH := $7FB
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FKEYPTR := $479 ; Holds offset from Aux $200 to FKEY def
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;;; I/O Soft Switches
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KBD := $C000
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@ -446,7 +448,7 @@ EscapeMode:
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;; Called by U3 ROM ($F809)
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bit CLRROM
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jmp UnknownEP3
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jmp InitFKEYDefinitions
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;; Called by U3 ROM ($F9B7)
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bit CLRROM
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@ -454,7 +456,7 @@ EscapeMode:
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;; Called by U3 ROM ($FA9E)
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bit CLRROM
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jmp UnknownEP5
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jmp HandleSpecialKeys
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;;; ==================================================
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;;; U2 $0400 - Mapped to Page $C4 - ???
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@ -770,7 +772,7 @@ LC853: inc RNDL
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:
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jsr UnknownEP4
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bcc LC853
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jsr UnknownEP5
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jsr HandleSpecialKeys
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cmp #$06
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bcc LC86E
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and #$7F
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@ -1602,61 +1604,64 @@ UnknownEP4:
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bra @l1
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@l5: phx
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ldx $0479
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jsr LCE1F
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ldx FKEYPTR
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jsr ReadAuxRAM
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lda $0200,x
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jsr LCE2E
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jsr ReadPreviousRAM
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plx
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cmp #$00
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beq @l4
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bra @l2
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;;; ============================================================
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;;; Unknown Monitor ROM Routine
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;;; Handle special keys (F1-12, RUN, LIST, etc)
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UnknownEP5:
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HandleSpecialKeys:
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bit $0579
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bmi @l11
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lda KBD
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bit KBDSTRB
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bit $C027 ; Special keys (F1, LIST, etc) or ALT + alphanumeric
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bit $C027 ; high bit clear for special keys
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bpl @l3
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@l1: cmp #$06
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bcc @l2
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ora #$80
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@l2: rts
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;; Deal with special keys
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@l3: and #$7F
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cmp #$01
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cmp #$01 ; CLRL
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bne @l4
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lda #$1A
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bra @l1
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@l4: cmp #$03
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@l4: cmp #$03 ; CLRS
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bne @l5
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lda #$0C
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bra @l1
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@l5: cmp #$04
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@l5: cmp #$04 ; HOME
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bne @l6
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lda #$19
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bra @l1
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@l6: cmp #$06
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;; "Macro" keys
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@l6: cmp #$06 ; RUN
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bne @l7
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lda #$2C
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lda #$2C ; Like F13
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bra @l9
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@l7: cmp #$1F
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@l7: cmp #$1F ; LIST
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bne @l8
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lda #$2D
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lda #$2D ; Like F14
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bra @l9
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@l8: cmp #$20 ; space?
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@l8: cmp #$20 ; F1
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bcc @l1
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cmp #$2C ; comma?
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cmp #$2C ; F12+1
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bcs @l1
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@l9: pha
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@l9: pha ; Handle Fkeys
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jsr LCDB3
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beq @l10
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pla
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@ -1665,7 +1670,7 @@ UnknownEP5:
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@l10: lda #$FF
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sta $0579
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pla
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jsr LCDC9
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jsr FindFKEYDefnOffset
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@l11: jsr LCDB3
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beq @l13
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@l12: stz $0579
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@ -1673,19 +1678,19 @@ UnknownEP5:
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bra @l1
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@l13: phx
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ldx $0479
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jsr LCE1F
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ldx FKEYPTR
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jsr ReadAuxRAM
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lda $0200,x
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jsr LCE2E
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jsr ReadPreviousRAM
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plx
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inc $0479
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inc FKEYPTR
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cmp #$00
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beq @l12
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bra @l1
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;;; ============================================================
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LCDB3: jsr LCE1F
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LCDB3: jsr ReadAuxRAM
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lda #$00
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phx
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tax
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@ -1694,53 +1699,59 @@ LCDB3: jsr LCE1F
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inx
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bne @l1
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plx
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jsr LCE2E
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jsr ReadPreviousRAM
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cmp $04F9
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rts
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;;; ============================================================
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;;; Given FKEY in A ($20...$2D), get definition offset
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;;; (from Aux $200) into FKEYPTR
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LCDC9: phx
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FindFKEYDefnOffset:
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phx
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phy
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jsr LCE1F
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jsr ReadAuxRAM
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sec
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sbc #$20
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sbc #$20 ; Map F1 to $00, etc
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ldy #$00
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tax
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beq LCDE2
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LCDD6: lda $0200,y
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beq LCDDE
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beq @l3
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@l1: lda $0200,y
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beq @l2
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iny
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bra LCDD6
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bra @l1
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LCDDE: iny
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LCDDF: dex
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bne LCDD6
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LCDE2: jsr LCE2E
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sty $0479
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@l2: iny
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dex
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bne @l1
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@l3: jsr ReadPreviousRAM
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sty FKEYPTR
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ply
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plx
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rts
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;;; ============================================================
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;;; Initialize FKEY definitions
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;; Function key shortcuts ???
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;;; Copied to Aux $200 by `InitFKEYDefinitions`
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SpecialStrings:
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.byte "RUN\r", 0
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.byte "LIST\r", 0
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.byte $ff
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;;; ============================================================
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;;; Unknown Monitor ROM Routine
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UnknownEP3:
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InitFKEYDefinitions:
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sta WRCARDRAM
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lda #$00
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tax
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;; F1...F12 are initially 0 length, so 12 $00 bytes
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@l1: sta $0200,x
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inx
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cpx #$0C
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cpx #12
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bcc @l1
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@l2: lda LCDDF,x
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;; RUN and LIST are like F13 and F14, so they're next.
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@l2: lda SpecialStrings - 12,x
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cmp #$FF
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beq @l3
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sta $0200,x
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@ -1760,7 +1771,10 @@ UnknownEP2:
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;;; ============================================================
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LCE1F: pha
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;;; Read from Aux (saving previous state)
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ReadAuxRAM:
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pha
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lda RDRAMRD
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sta RDMAINRAM
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sta $07F8
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@ -1768,7 +1782,10 @@ LCE1F: pha
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pla
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rts
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LCE2E: pha
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;;; Restore previous read bank state
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ReadPreviousRAM:
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pha
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sta RDMAINRAM
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lda $07F8
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bpl @l1
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