| Routines

03789: THE 'COPY-BUFF' SUBROUTINE

Used by the routines at PO_ENTER, PO_ANY and MAIN_EXEC. This subroutine is called whenever the printer buffer is to have its contents passed to the printer.
COPY_BUFF | 03789 | DI | Disable the maskable interrupt.
| 03790 | LD HL,23296 | The base address of the printer buffer.
| 03793 | LD B,8 | There are eight pixel lines.
COPY_3 | 03795 | PUSH BC | Save the line number.
| 03796 | CALL COPY_LINE | Print the line.
| 03799 | POP BC | Fetch the line number.
| 03800 | DJNZ COPY_3 | Jump back until 8 lines have been printed.
This entry point is used by the routine at COPY.
COPY_END | 03802 | LD A,4 | Stop the printer motor.
| 03804 | OUT (251),A
| 03806 | EI | Enable the maskable interrupt and continue into CLEAR_PRB.