16 lines
306 B
NASM
16 lines
306 B
NASM
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; the ZX Spectrum BASIC firmware scans the keyboard for ASCII codes on clock interrupts
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; this routine just waits for a key and reads its value
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k_getc:
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;ei
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push hl
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ld hl, 23611 ; ZXS_FLAGS
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res 5, (hl)
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.loop:
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bit 5, (hl) ; pressed?
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jr z, .loop
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ld hl, 23560 ; ZXS_LASTK
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ld a, (hl)
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pop hl
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ret
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