semgra.asm
; z88dk / PC-88 mon
; z80asm -b -l semgra.asm
tvram equ $f3c8
vtvram equ $c3c8
org $b000
start:
call crtset
call vtinit
.mloop
xor a
call vtcls
call inkey ; hl = (datidx)
ld b, 160 ; 列数
ld c, 0 ; x
.vloop
push bc
ld a, h
and $03 ; hl %= 1024
ld h, a
push hl
add hl, hl
ld de, data
add hl, de ; hl = data + hl*2
ld d, (hl)
ld a, 50
sub d
ld b, a ; y = 50 - d
rlc d ; 高さ
inc hl
ld e, (hl) ; 色
call vline
pop hl
inc hl
pop bc
inc c
djnz vloop
call vblank
call vtblt
jr mloop
.exit
di
halt
crtset:
ld hl, $e6b4
ld (hl), $98 ; アトリビュート
inc hl
inc hl
inc hl
inc hl
ld (hl), $00 ; ファンクション・キー表示スイッチ
inc hl
ld (hl), $ff ; カラー／白黒スイッチ
ld b, 80
ld c, 25
call $6f6b ; CRTSET
ret
vblank:
in a, ($40)
and $20
jr nz, vblank
.wait
in a, ($40)
and $20
jr z, wait
ret
vtinit:
ld hl, tvram
ld de, vtvram
ld bc, 120*25
ldir
ret
vtblt:
ld hl, vtvram
ld de, tvram
ld bc, 120*25
ldir
ret
vtcls:
ld hl, vtvram
ld b, 25
.vtcls1
push bc
ld (hl), a
ld d, h
ld e, l
inc de
ld bc, 80-1
ldir
ld de, 40+1
add hl, de
pop bc
djnz vtcls1
ret
inkey:
ld hl, (datidx)
in a, ($0a) ; 左キー
and $04
jr nz, skip1
dec hl
dec hl
.skip1
in a, ($08) ; 右キー
and $04
jr nz, skip2
inc hl
inc hl
.skip2
ld (datidx), hl
ret
; vertical line
; b=y c=x d=高さ e=色
vline:
ld a, d
or a
ret z
push de
ld hl, pmasks
ld d, 0
add hl, de
ld a, (hl)
ld (pmask), a
call pset
.vline1
pop de
dec d
ret z
push de
call psetd
jr vline1
; point set
; b=y c=x
; use: a, de, hl
pset:
ld a, b ; de = y & $fc
and $fc
ld e, a
ld d, 0
ld hl, 0 ; hl = de * 30
add hl, de
add hl, hl
add hl, de
add hl, hl
add hl, de
add hl, hl
add hl, de
add hl, hl ; %11110=30倍
ld e, c ; hl += x / 2
srl e
add hl, de
ld de, vtvram
add hl, de
ld a, b
and $03
ld e, a ; e = y & 3
ld a, c ; a = (x & 1 == 0) ? $01 : $10
and $01
ld a, $01
jr z, pset1
ld a, $10
.pset1
dec e
jp m, pset2
add a, a
jr pset1
.pset2
call psetdo
ret
; pset down
; use: a, de, hl
psetd:
ld hl, (paddr)
ld a, (pbits)
ld e, a
and $88
ld a, e
jr z, psetd1
ld de, 120
add hl, de
rlca
rlca
rlca
rlca
.psetd1
rlca
call psetdo
ret
; pset do
; hl=addr a=bits
; use: a, e
psetdo:
ld (paddr), hl
ld (pbits), a
ld e, a
ld a, (pmask)
and e
ld a, e
jr z, psetdo0
.psetdo1
or (hl)
ld (hl), a
ret
.psetdo0
cpl
and (hl)
ld (hl), a
ret
paddr: defw 0
pbits: defb 0
pmask: defb 0
pmasks: defb $ff, $5a
datidx: defw 0
data:
defb 16,0,16,0,16,0,16,0,16,0,16,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0
defb 04,0,04,0,04,0,00,0,00,0,00,0,00,0,03,1,03,1,03,0,03,0,03,1,03,1,04,1,04,1,04,1
defb 04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0,00,0,00,0
defb 03,1,03,1,03,1,03,0,03,0,03,0,03,0,03,0,03,0,03,0,03,0,03,0,03,0,03,0,03,0,00,0
defb 00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,03,0,03,1
defb 03,1,05,1,05,1,07,1,07,1,07,1,07,1,07,1,07,1,07,1,07,1,07,1,07,1,08,1,08,1,08,1
defb 08,1,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,07,0,07,0,07,0,07,0,07,0,07,0,07,0
defb 07,0,07,0,07,0,07,0,07,0,07,0,06,1,06,1,06,0,06,0,06,0,06,0,06,0,06,0,05,0,05,0
defb 05,0,05,0,05,0,05,0,05,0,05,0,00,0,00,0,00,0,00,0,00,0,00,0,03,1,03,1,03,1,03,1
defb 03,1,04,1,04,1,05,1,05,1,05,1,05,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1
defb 16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,17,1,17,1,17,1,17,1,17,1,17,1,28,1
defb 28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1,28,1
defb 28,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1
defb 29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,30,1,30,1
defb 30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1
defb 30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1
defb 30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1
defb 30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1,30,1
defb 30,1,30,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1
defb 29,1,29,1,29,1,29,1,29,1,29,1,29,1,29,1,18,1,18,1,18,1,30,0,30,0,30,0,30,0,32,0
defb 32,0,32,0,32,0,33,0,33,0,33,0,33,0,33,0,34,0,34,0,34,0,34,0,34,0,36,0,36,0,36,0
defb 36,0,36,0,36,0,36,0,38,0,38,0,38,0,38,0,38,0,38,0,38,0,38,0,40,0,40,0,40,0,40,0
defb 40,0,40,0,40,0,40,0,40,0,42,0,42,0,42,0,42,0,42,0,42,0,42,0,42,0,42,0,42,0,42,0
defb 42,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0,44,0
defb 44,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0,47,0
defb 47,0,47,0,47,0,47,0,47,0,47,0,47,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0
defb 50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0
defb 50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0
defb 50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0
defb 50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,0,50,1,50,1,50,1,50,1,50,1,50,1,50,1,47,1
defb 47,1,47,1,47,1,44,1,44,1,44,1,42,1,42,1,40,1,40,1,38,1,38,1,36,1,34,1,34,1,33,1
defb 32,1,29,1,28,1,27,1,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0
defb 00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0
defb 05,1,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0,05,0
defb 05,0,05,0,05,0,05,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0
defb 00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0
defb 00,0,00,0,03,1,03,1,03,1,04,1,04,1,04,1,04,0,04,0,04,0,04,0,04,0,04,0,04,0,04,0
defb 07,1,07,1,07,1,07,1,07,1,07,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,0
defb 08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0
defb 08,0,08,0,07,0,07,0,07,0,07,0,04,1,04,1,04,1,04,1,04,0,04,0,04,0,04,0,04,0,04,0
defb 04,0,04,0,04,0,04,0,04,0,00,0,00,0,00,0,00,0,07,1,07,1,07,1,08,1,08,1,08,1,08,1
defb 08,1,08,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1,09,1
defb 09,1,09,1,09,1,09,1,09,1,09,1,09,0,09,0,09,0,09,0,09,0,09,0,09,0,09,0,08,0,08,0
defb 08,0,08,0,08,0,08,0,08,0,08,1,08,0,08,0,08,0,08,0,07,0,07,0,07,0,07,0,07,0,07,0
defb 07,0,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1,05,1
defb 05,0,05,0,05,0,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,20,1
defb 20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1
defb 20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1
defb 20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1
defb 20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1
defb 20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1,20,1
defb 20,1,20,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,10,1,00,0
defb 10,0,10,0,10,0,11,0,11,0,11,0,11,0,11,0,11,0,11,0,11,0,12,0,12,0,12,0,12,0,12,0
defb 12,0,12,0,13,0,13,0,13,0,13,0,13,0,13,0,13,0,13,0,14,0,14,0,14,0,14,0,14,0,14,0
defb 14,0,14,0,14,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,16,0,16,0,16,0,16,0,16,0
defb 16,0,16,0,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,16,1,15,1,15,1,15,1,15,1
defb 15,1,15,1,15,1,15,1,15,1,15,1,15,1,14,1,14,1,14,1,14,1,14,1,14,1,14,1,14,1,14,1
defb 14,1,14,1,14,1,13,1,13,1,13,1,13,1,13,1,00,0,00,0,00,0,00,0,00,0,00,0,00,0,00,0
defb 00,0,00,0,00,0,00,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0
defb 08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,08,0,09,0,09,0
defb 08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,08,1,07,1,15,0,15,0,15,0,15,0,15,0,15,0
defb 15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0
defb 15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,15,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0
defb 16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0,16,0
