| Routines

03807: THE 'CLEAR PRINTER BUFFER' SUBROUTINE

Used by the routines at COPY_LINE and NEW. The printer buffer is cleared by calling this subroutine.
CLEAR_PRB | 03807 | LD HL,23296 | The base address of the printer buffer.
| 03810 | LD (IY+70),L | Reset the printer 'column' at PR-CC.
| 03813 | XOR A | Clear the A register.
| 03814 | LD B,A | Also clear the B register (in effect B holds 256).
PRB_BYTES | 03815 | LD (HL),A | The 256 bytes of the printer buffer are all cleared in turn.
| 03816 | INC HL
| 03817 | DJNZ PRB_BYTES
| 03819 | RES 1,(IY+48) | Signal 'the buffer is empty' (reset bit 1 of FLAGS2).
| 03823 | LD C,33 | Set the printer position and return via CL_SET and PO_STORE.
| 03825 | JP CL_SET