| Routines

00125: THE 'SKIP-OVER' SUBROUTINE

Used by the routine at GET_CHAR. The value brought to the subroutine in the A register is tested to see if it is printable. Various special codes lead to HL being incremented once or twice, and CH-ADD amended accordingly.
Input
A | Character code
SKIP_OVER | 00125 | CP 33 | Return with the carry flag reset if ordinary character code.
| 00127 | RET NC
| 00128 | CP 13 | Return if the end of the line has been reached.
| 00130 | RET Z
| 00131 | CP 16 | Return with codes 0 to 15 but with carry set.
| 00133 | RET C
| 00134 | CP 24 | Return with codes 24 to 32 again with carry set.
| 00136 | CCF
| 00137 | RET C
| 00138 | INC HL | Skip over once.
| 00139 | CP 22 | Jump forward with codes 16 to 21 (INK to OVER).
| 00141 | JR C,SKIPS
| 00143 | INC HL | Skip over once more (AT and TAB).
SKIPS | 00144 | SCF | Return with the carry flag set and CH-ADD holding the appropriate address.
| 00145 | LD (23645),HL
| 00148 | RET