|
Routines |
| Prev: 63233 | Up: Map | Next: 63263 |
| 63247 | LD HL,(63018) | Load HL with address of bitmap virtual text cursor... | ||
| 63250 | INC HL | ...and increase (for next character) | ||
| 63251 | LD A,L | Load LSB of HL into A... | ||
| 63252 | OR A | ...and check whether it is zero | ||
| 63253 | JR NZ,63259 | If it is not zero (i.e. advancing down a character row will not take us into a different third) then skip ahead to 63259 | ||
| 63255 | LD A,H | Add 7 to MSB of display file address as advancing by one at 63250 took display file pointer back up to 2nd pixel row of the current third of the display when in fact we need to move to top pixel row of the NEXT third of the display (i.e. 7 × 32 × 8 = 7 × 256 bytes on from this!) | ||
| 63256 | ADD A,7 | |||
| 63258 | LD H,A | |||
|
This entry point is used by the routines at 63203, 63263, 63349 and 63399.
|
||||
| 63259 | LD (63018),HL | Store the updated address of bitmap virtual text cursor | ||
| 63262 | RET | Return | ||
| Prev: 63233 | Up: Map | Next: 63263 |