| Routines

0C3B: THE 'PO-SAVE' SUBROUTINE

Used by the routines at PO_TV_2 and PO_MSG. The routine at PO_MSG continues here. This subroutine allows for characters to be printed 'recursively'. The appropriate registers are saved whilst PRINT_A_1 is called.
Input
A | Character code
PO_SAVE | 0C3B | PUSH DE | Save the DE register pair.
| 0C3C | EXX | Save HL and BC.
| 0C3D | RST $10 | Print the single character.
| 0C3E | EXX | Restore HL and BC.
| 0C3F | POP DE | Restore DE.
| 0C40 | RET | Finished.