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millfork/include/zxspectrum.mfk
Karol Stasiak 63ff28e94e Changes to macros and parameter list syntax:
* non-asm macros can now take `const` and `call` parameters
* register parameters to asm functions and macros can be given names if annotated explicitly
2020-03-30 19:23:48 +02:00

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#if not(ZX_SPECTRUM)
#warn zxspectrum module should be only used on ZX Spectrum-compatible targets
#endif
#pragma zilog_syntax
inline asm void putchar(byte register(a) char) {
rst $10
? ret
}
inline void new_line() {
putchar(13)
}
inline asm void set_border(byte register(a) colour) {
out (254),a
? ret
}
inline asm void bell() {
? ld hl,$6A
? ld de,$105
? call $3B5
? ret
}
array __readline_out[45]
const pointer readline_out = __readline_out.addr
pointer readline() {
asm {
ld a, 1
call $1601
ld hl, $5c71
set 7, (hl)
set 5, (hl)
call $16b0
ld bc, 1
rst $30
ld (hl), 13
ld ($5c5b), hl
ld hl, __readline_exit
push hl
ld ($5c2d), sp
call $0f2c
pop hl
ld hl, ($5c61)
ld de, __readline_out.addr
ld b, __readline_out.length - 1
__readline_copy:
ld a, (hl)
cp 13
jr z, __readline_exit
ld (de), a
inc hl
inc de
djnz __readline_copy
__readline_exit:
ld a, 0
ld (de), a
ld a,2
call $1601
call $16b0
}
putstrz(__readline_out)
new_line()
return __readline_out.addr
}
const byte black = 0
const byte blue = 1
const byte red = 2
const byte purple = 3
const byte green = 4
const byte cyan = 5
const byte yellow = 6
const byte white = 7