mirror of
https://github.com/cc65/cc65.git
synced 2024-06-07 23:29:39 +00:00
435 lines
5.8 KiB
ArmAsm
435 lines
5.8 KiB
ArmAsm
.include "gamate.inc"
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.zeropage
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addr: .word 0
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psa: .word 0
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.word 0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0 ; get out of sensitiv area
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readaddr: .word 0
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editbuffer1: .byte 0,0,0,0, 0,0,0,0 ;0,1,2,3,4,5,6,7
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writeaddr: .word 0
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editbuffer2: .byte 0,0,0,0, 0,0,0,0 ;8,9,$a,$b,$c,$d,$e,$f
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cursor: .byte 0
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controlslast: .byte 0
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controlsedge: .byte 0
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.data
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temp_x: .byte 0
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temp_y: .byte 0
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temp_a: .byte 0
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irq_count: .byte 0
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nmi_count: .byte 0
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psx: .byte 0
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psy: .byte 0
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xpos: .byte 0
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ypos: .byte 0
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.code
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checksum: .word 0
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.byte 1,0,1
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.byte "COPYRIGHT BIT CORPORATION", 0, $ff
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jmp reset
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jmp nmi
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jmp irq
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chars:
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.incbin "cga2.chr"
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hex2asc: .byte "0123456789abcdef"
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.proc nmi
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inc nmi_count
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rts
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.endproc
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.proc irq
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inc irq_count
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rts
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.endproc
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.proc reset
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lda #>audio_base
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sta writeaddr+1
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sta readaddr+1
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lda #<audio_base
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sta writeaddr
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sta readaddr
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lda #$10
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sta editbuffer1+6
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lda #$e
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sta editbuffer2+5
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lda #$ff
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sta editbuffer2+3
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lda #$ff
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sta editbuffer2+4
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lda #$0f
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sta editbuffer2
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lda #$0f
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sta editbuffer2+1
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lda #$0e
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sta editbuffer2+2
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lda #$38
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sta editbuffer1+7
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lda #0
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sta lcd_x_pos
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sta lcd_y_pos
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sta irq_count
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sta cursor
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lda #1
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sta nmi_count
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cli
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lda #lcd_mode_y_increment
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sta lcd_mode
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jsr printy
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lda #1
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sta nmi_enable
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loop:
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lda irq_count
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loop1:
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cmp irq_count
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beq loop1
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lda irq_count
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and #7
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bne loop1
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lda #lcd_mode_y_increment
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sta lcd_mode
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ldx #3
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ldy #32
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lda irq_count
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jsr printhex
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lda cursor
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ldy #0
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cmp #20
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bcc firstline
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sec
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sbc #20
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ldy #24
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firstline:
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sta lcd_x
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sty lcd_y
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lda #' '
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jsr printsign
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norclearcursor:
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jsr inputs
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lda irq_count
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and #8
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bne nocursor
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lda cursor
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ldy #0
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cmp #20
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bcc firstline2
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sec
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sbc #20
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ldy #24
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firstline2:
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sta lcd_x
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sty lcd_y
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lda #'x'
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jsr printsign
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nocursor:
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lda #lcd_mode_y_increment
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sta lcd_mode
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jsr printy
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jmp loop
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.endproc
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.proc printy
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ldy #0
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loop1:
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tya
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pha
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asl
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tax
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lda readaddr,y
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ldy #8
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jsr printhex
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pla
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tay
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iny
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cpy #10
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bne loop1
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loop2:
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tya
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pha
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tya
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sec
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sbc #10
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asl
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tax
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lda readaddr,y
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ldy #16
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jsr printhex
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pla
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tay
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iny
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cpy #20
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bne loop2
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ldx #0
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ldy #32
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lda nmi_count
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jsr printhex
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rts
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.endproc
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.proc inputs
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lda controlslast
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eor controls
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and controlslast
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eor #$ff
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sta controlsedge
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and #up
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bne notup
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lda cursor
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lsr
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tay
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bcs uplow
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lda readaddr,y
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clc
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adc #$10
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sta readaddr,y
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jmp notup
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uplow:lda readaddr,y
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clc
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adc #1
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sta readaddr,y
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notup:lda controlsedge
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and #down
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bne notdown
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lda cursor
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lsr
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tay
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bcs downlow
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lda readaddr,y
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sec
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sbc #$10
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sta readaddr,y
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jmp notdown
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downlow:
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lda readaddr,y
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sec
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sbc #1
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sta readaddr,y
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notdown:lda controlsedge
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and #left
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bne notleft
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lda cursor
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beq notleft
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dec cursor
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notleft:lda controlsedge
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and #right
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bne notright
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lda cursor
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cmp #40
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beq notright
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inc cursor
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notright:lda controlsedge
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and #start
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bne notstart
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lda #0
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sta audio_base
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sta audio_base+1
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sta audio_base+2
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sta audio_base+3
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sta audio_base+4
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sta audio_base+5
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sta audio_base+6
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sta audio_base+8
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sta audio_base+9
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sta audio_base+10
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sta audio_base+11
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sta audio_base+12
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sta audio_base+13
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sta audio_base+7
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notstart:lda controlsedge
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and #select
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bne notselect
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lda editbuffer1
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sta audio_base
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lda editbuffer1+1
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sta audio_base+1
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lda editbuffer1+2
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sta audio_base+2
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lda editbuffer1+3
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sta audio_base+3
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lda editbuffer1+4
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sta audio_base+4
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lda editbuffer1+5
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sta audio_base+5
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lda editbuffer1+6
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sta audio_base+6
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lda editbuffer2
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sta audio_base+8
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lda editbuffer2+1
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sta audio_base+9
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lda editbuffer2+2
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sta audio_base+10
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lda editbuffer2+3
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sta audio_base+11
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lda editbuffer2+4
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sta audio_base+12
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lda editbuffer2+5
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sta audio_base+13
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lda editbuffer1+7
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sta audio_base+7
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notselect:lda controlsedge
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and #button_a
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bne notbuttona
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ldy #0
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ldy #0
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writea:lda editbuffer1,y
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sta (writeaddr),y
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iny
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cpy #8
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bne writea
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writeb:lda editbuffer2-8,y
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sta (writeaddr),y
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iny
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cpy #16
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bne writeb
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notbuttona:lda controlsedge
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and #button_b
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bne notbuttonb
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ldy #0
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reada:lda (readaddr),y
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sta editbuffer1,y
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iny
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cpy #8
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bne reada
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readb:lda (readaddr),y
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sta editbuffer2-8,y
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iny
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cpy #16
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bne readb
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notbuttonb:
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lda controls
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sta controlslast
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rts
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.endproc
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.proc printstring
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sta psa
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stx psa+1
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ldx #0
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stx psx
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sty psy
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printstring2:
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ldy #0
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lda (psa),y
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beq printstring1
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ldx psx
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stx lcd_x
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ldy psy
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sty lcd_y
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jsr printsign
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inc psx
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lda psa
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clc
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adc #1
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sta psa
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lda psa+1
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adc #0
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sta psa+1
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jmp printstring2
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printstring1:
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rts
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.endproc
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.proc printstringy
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sta psa
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stx psa+1
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printstring2:
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ldy #0
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lda (psa),y
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beq printstring1
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jsr printsign
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lda psa
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clc
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adc #1
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sta psa
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lda psa+1
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adc #0
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sta psa+1
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jmp printstring2
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printstring1:
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rts
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.endproc
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.proc printhex
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pha
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lsr
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lsr
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lsr
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lsr
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and #$0f
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stx temp_x
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tax
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lda hex2asc,x
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ldx temp_x
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stx lcd_x
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sty lcd_y
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jsr printsign
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pla
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and #$0f
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inx
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stx temp_x
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tax
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lda hex2asc,x
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ldx temp_x
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stx lcd_x
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sty lcd_y
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jmp printsign
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.endproc
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.proc printsign
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sty temp_y
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stx temp_x
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sta temp_a
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lda temp_a
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sta addr
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lda #0
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sta addr+1
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asl addr
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rol addr+1
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asl addr
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rol addr+1
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asl addr
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rol addr+1
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lda addr
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clc
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adc #<chars
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sta addr
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lda addr+1
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adc #>chars
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sta addr+1
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ldx #8
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ldy #0
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printsign1:
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lda (addr),y
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sta lcd_data
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iny
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dex
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bne printsign1
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ldx temp_x
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ldy temp_y
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rts
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.endproc
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