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|
.macro buf_cmd
ld a, 23
rst.lil $10
ld a, 0
rst.lil $10
ld a, $a0
rst.lil $10
.endmacro
.macro vdu end
push hl
push bc
ld hl, @vdu_start
ld bc, end - @vdu_start
rst.lil $18
pop bc
pop hl
jr end
@vdu_start:
.endmacro
font_buf: .equ 1000
.include "mos_api.inc"
.assume adl = 1
.org $40000
jr start
.asciz "anxiety.bin"
.align 64 ; fill with 0 up to MOS header
.db "MOS" ; MOS header
.db 0 ; version 0
.db 1 ; ADL mode
start:
ei
ld hl, mode ; location of screen mode restore
mos mos_sysvars ; load pointer to sysvars in IX
ld a, (ix + sysvar_scrMode) ; get current screen mode
ld (hl), a ; save it in command stream
vdu_init:
vdu @n
.db 12 ; CLS
.db 16 ; CLG
.db 23, 0, $c0, 0 ; logical coords off
; .db 22, 0 ; select screenmode, 640x480x16
.db 22, 18 ; select screenmode, 1024x768x2
.db 23, 1, 0 ; hide cursor
@@:
ld de, 0
ld hl, font ; first 256 bytes are character widths
ld ix, font + $100 ; font icn data starts here
ld b, -1
create_char:
call create_bitmap
inc hl
inc d
djnz create_char
main:
ld hl, font
ld (font_ptr), hl
ld hl, 40
ld (x), hl
ld hl, text
call print_text
ld hl, 0
ld (x), hl
ld hl, (y)
ld de, 32
add hl, de
ld (y), hl
ld hl, small_text
call print_text
loop:
mos mos_sysvars
ld a, (ix + sysvar_keyascii)
cp '\e'
jr nz, loop ; Loop until key is pressed
end:
vdu @n
.db 16 ; CLG
.db 23, 1, 1 ; show cursor
.db 22 ; restore screen mode
mode:
.db 0
@@:
ld hl, 0 ; return success
ret
create_bitmap:
ld e, (hl) ; get width
buf_cmd
ld a, d ; buffer id
rst.lil $10
ld a, 0 ; buffer id is 16-bit, send msb
rst.lil $10
ld a, 2 ; clear buffer
rst.lil $10
buf_cmd
ld a, d ; buffer id
rst.lil $10
ld a, 0 ; buffer id is 16-bit, send msb
rst.lil $10
ld a, 0 ; write block
rst.lil $10
ld a, 32 ; block length
rst.lil $10
ld a, 0 ; length msb
rst.lil $10
push bc
ld b, 16
@loop:
ld a, (ix)
rst.lil $10
ld a, (ix + 16)
rst.lil $10
inc ix
djnz @loop
ld b, 16
@@:
inc ix
djnz @p
pop bc
buf_cmd
ld a, d ; buffer id
rst.lil $10
ld a, 0 ; buffer id is 16-bit, send msb
rst.lil $10
ld a, 14 ; consolidate blocks
rst.lil $10
ld a, 23 ; bitmap api
rst.lil $10
ld a, 27 ; bitmap api
rst.lil $10
ld a, $20 ; select bitmap
rst.lil $10
ld a, d ; buffer id
rst.lil $10
ld a, 0 ; buffer id is 16-bit, send msb
rst.lil $10
ld a, 23 ; bitmap api
rst.lil $10
ld a, 27 ; bitmap api
rst.lil $10
ld a, $21 ; create bitmap
rst.lil $10
ld a, 16 ; width id
rst.lil $10
ld a, 0 ; width is 16-bit, send msb
rst.lil $10
ld a, 16 ; height
rst.lil $10
ld a, 0 ; height is 16-bit, send msb
rst.lil $10
ld a, 2 ; 1-bpp
rst.lil $10
ret
plot:
ld a, 25
rst.lil $10
ld a, $ed
rst.lil $10
ld a, l
rst.lil $10
ld a, h
rst.lil $10
ld a, e
rst.lil $10
ld a, d
rst.lil $10
ret
draw_char:
push hl
ld de, 0
ld e, a
ld a, 23 ; bitmap api
rst.lil $10
ld a, 27 ; bitmap api
rst.lil $10
ld a, $20 ; select bitmap
rst.lil $10
ld a, e ; select bitmap id based on ascii code
rst.lil $10
ld a, 0 ; buffer id is 16-bit, send msb
rst.lil $10
push de
ld hl, (x)
ld de, (y)
call plot
pop de
ld hl, font
add hl, de ; add width pointer offset
ld a, (hl) ; get width
ld d, 0
ld e, a
ld hl, (x)
add hl, de ; update cursor pointer by width
ld (x), hl
pop hl
ret
print_text:
ld a, (hl)
cp 0
ret z
inc hl
call draw_char
jr print_text
font:
.incbin "times15.uf2"
; times12:
; .incbin "times12.uf2"
text:
.asciz "Happy New Years!"
small_text:
.asciz "Wait a minute, wait a minute, Doc, are you telling me that you built a time machine out of a delorean."
font_ptr:
.dw 0
x:
.dw 0
y:
.dw 0
|
