zxuno-git/textrender.asm

79 lines
916 B
NASM

showText:
xor a
ld (show_offset), a
call renderTextScreen
showTxLp:
call txControls
dup 5
halt
edup
jp showTxLp
txControls:
call inkey
and a
ret z
cp 'q'
jp z, txUp
cp 'a'
jp z, txDn
cp 'b'
jp z, historyBack
cp 'o'
jp z, openURI
ret
txUp:
ld a, (show_offset)
and a
ret z
sub 20
ld (show_offset), a
call renderTextScreen
ret
txDn:
ld a, (show_offset)
add 20
ld (show_offset), a
call renderTextScreen
ret
renderTextScreen:
call renderHeader
ld b, 20
txRenderLp:
push bc
ld a, 20
sub b
ld b, a
ld a, (show_offset)
add b
ld b, a
call renderTextLine
pop bc
djnz txRenderLp
ret
renderTextLine:
call findLine
ld a, h
or l
ret z
ld a, (hl)
and a
ret z
call printL64
call mvCR
ret