AppleIIAsm-Collection/source/disk1_stdio/T.SINPUT.SUB

*
*``````````````````````````````*
* SINPUT ::      SPECIAL INPUT *
*                              *
* INPUTS A STRING OF TEXT VIA  *
* MONITOR HOOKS. MAX 255 CHARS *
*-                            -*
* CLOBBERS:                    *
*                              *
* FLAGS:  ???-----  REG: AXYM  *
*-                            -*
* CYCLES: ???                  *
* SIZE:                        *
*-                            -*
* USAGE:                       *
*        JSR   SINPUT          *
*-                            -*
* ENTRY                        *
*                              *
* TOP OF STACK                 *
*                              *
* LOW BYTE OF RETURN ADDRESS   *
* HI BYTE OF RETURN ADDRESS    *
* LOW BYTE OF INPUT ADDRESS    *
* HI BYTE OF INPUT ADDRESS     *
*-                            -*
* EXIT                         *
*                              *
* TOP OF STACK                 *
*                              *
* LOW BYTE OF RETURN ADDRESS   *
* HI BYTE OF RETURN ADDRESS    *
*                              *
*   A = LOW BYTE OF ADDRESS    *
*   X = LENGTH OF STRING       *
*   Y = LENGTH OF STRING       *
*                              *
* [RETURN] = STRING TYPED      *
* [RETLEN] = LENGTH OF STRING  *
*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,*
*
SINPUT
*
** SAVE RETURN ADDRESS
*
         PLA
         STA   RETADR
         PLA
         STA   RETADR+1
*
         LDX   #$00
         JSR   GETLN
         STX   :STRLEN    ; STORE STR LENGTH
         CPX   #0
         BEQ   :EXIT
*
:INP_CLR
         LDY   #0
         LDA   :STRLEN    ; LENGTH OF STRING
         STA   RETLEN,Y   ; PUT LENGTH
:LOOP
         LDA   KEYBUFF,Y  ; PUT STR INTO NEW LOC
         STA   RETURN,Y
         INY
         CPY   :STRLEN    ; IF Y < STR LENGTH
         BNE   :LOOP      ; LOOP; ELSE, CONTINUE
*
:EXIT
*
** RESTORE RETURN ADDRESS
*
         LDA   RETADR+1
         PHA
         LDA   RETADR
         PHA
*
         RTS
*
** DATA
*
:STRLEN  DS    1
*