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29 lines
942 B
ArmAsm
29 lines
942 B
ArmAsm
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; jede jede@oric.org 2017-10-01
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.export _cgetc
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.import cursor
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.include "telestrat.inc"
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.proc _cgetc
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; this routine could be quicker if we wrote in page 2 variables,
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; but it's better to use telemon routine in that case, because telemon can manage 4 I/O
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ldx cursor ; if cursor equal to 0, then switch off cursor
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beq switchoff_cursor
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ldx #$00 ; x is the first screen
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BRK_TELEMON(XCSSCR) ; display cursor
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jmp loop ; could be replaced by a bne/beq but 'jmp' is cleaner than a bne/beq which could expect some matters
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switchoff_cursor:
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; at this step X is equal to $00, X must be set, because it's the id of the screen (telestrat can handle 4 virtuals screen)
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BRK_TELEMON(XCOSCR) ; switch off cursor
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loop:
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BRK_TELEMON XRD0 ; waits until key is pressed
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bcs loop
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rts
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.endproc
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