cc65/libsrc/telestrat/cgetc.s

;
; jede jede@oric.org 2017-10-01
;
    .export    _cgetc

    .import    cursor

    .include   "telestrat.inc"

.proc _cgetc
        ; this routine could be quicker if we wrote in page 2 variables,
        ; but it's better to use telemon routine in that case, because telemon can manage 4 I/O
        ldx     cursor       ; if cursor equal to 0, then switch off cursor
        beq     switchoff_cursor

        ldx     #$00         ; x is the first screen
        BRK_TELEMON(XCSSCR)  ; display cursor
        jmp     loop         ; could be replaced by a bne/beq but 'jmp' is cleaner than a bne/beq which could expect some matters

switchoff_cursor:
        ; 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)
        BRK_TELEMON(XCOSCR)  ; switch off cursor

loop:
        BRK_TELEMON XRD0     ; waits until key is pressed
        bcs     loop
        rts
.endproc