$A3/163:   Bit Counter Tape Read or Write
            Serial Bus EOI (End Of Input) Flag

  Used by Jiffy-DOS: LDFLG/QFLAG

   Used in all disk access and Load routines.

  Used by ByteBoiler: Temporary

Kernal-Reference:

 BIT $A3     : $ED4C
 DEC $A3     : $FA00 $FC0E
 LDA $A3     : $F9C3 $FA18 $FC10
 LDX $A3     : $F969
 LSR $A3     : $ED1E
 ROR $A3     : $ED17
 STA $A3     : $FB99

    Previous Page / Next Page