I’ve added quite a few things recently to the emulator, including:
- Updating the menu
- Loading Intel Hex files
- A 6502 two-pass assembler in Python
- Getting the sound boards working (it supports four, so eight AY-8910 chips!)
- Getting the hi-res graphics working (it supports four hi-res boards, giving 16 colours at 256×256)
- Starting on a library of useful things for the assembler
- Adding some assembler examples
The emulator can be found at https://github.com/geo255/microtan65.
; hires_graphics_demo.s
; Demo program for lib/hires_graphics_lib.s
;
; Before running, select Tangerine hi-res display mode in the emulator menu.
.org $0400
jmp Start
.include "includes/microtan_hw_labels.inc"
.include "../lib/hires_graphics_lib.s"
Start:
; Clear to black.
lda #$00
jsr HRG_ClearScreenA
; White center pixel.
ldx #$80
ldy #$80
lda #$0F
jsr HRG_SetPixelXYA
; Red diagonal line (top-left to bottom-right).
lda #$01
sta HRG_COLOR
lda #$00
sta HRG_X0
sta HRG_Y0
lda #$FF
sta HRG_X1
sta HRG_Y1
jsr HRG_DrawLine
; Bright green box outline.
lda #$0A
sta HRG_COLOR
lda #$10
sta HRG_X0
lda #$20
sta HRG_Y0
lda #$F0
sta HRG_X1
lda #$E0
sta HRG_Y1
jsr HRG_DrawRect
; Blue filled box.
lda #$04
sta HRG_COLOR
lda #$20
sta HRG_X0
lda #$30
sta HRG_Y0
lda #$70
sta HRG_X1
lda #$90
sta HRG_Y1
jsr HRG_FillRect
; Yellow triangle outline.
lda #$03
sta HRG_COLOR
lda #$18
sta HRG_X0
lda #$D8
sta HRG_Y0
lda #$80
sta HRG_X1
lda #$40
sta HRG_Y1
lda #$E8
sta HRG_X2
lda #$D8
sta HRG_Y2
jsr HRG_DrawTriangle
; Magenta filled triangle.
lda #$0D
sta HRG_COLOR
lda #$30
sta HRG_X0
lda #$70
sta HRG_Y0
lda #$C0
sta HRG_X1
lda #$70
sta HRG_Y1
lda #$80
sta HRG_X2
lda #$C8
sta HRG_Y2
jsr HRG_FillTriangle
; Cyan ellipse outline.
lda #$06
sta HRG_COLOR
lda #$08
sta HRG_X0
lda #$08
sta HRG_Y0
lda #$78
sta HRG_X1
lda #$58
sta HRG_Y1
jsr HRG_DrawEllipse
; Bright red filled ellipse.
lda #$09
sta HRG_COLOR
lda #$90
sta HRG_X0
lda #$20
sta HRG_Y0
lda #$F8
sta HRG_X1
lda #$88
sta HRG_Y1
jsr HRG_FillEllipse
brk