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Routines |
| Prev: 98CC | Up: Map | Next: 992A |
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| ControlCode_02 | 9903 | PUSH DE | Stash DE and BC on the stack. | |
| 9904 | PUSH BC | |||
| 9905 | LD HL,$5800 | HL=5800 (attribute buffer location). | ||
| 9908 | LD DE,$5801 | DE=5801. | ||
| 990B | LD BC,$02FF | BC=02FF. | ||
| 990E | HALT | Halt operation (suspend CPU until the next interrupt). | ||
| 990F | LD (HL),$00 | Write 00 to *HL. | ||
| 9911 | LDIR | LDIR. | ||
| 9913 | LD B,$C0 | B=C0. | ||
| 9915 | LD HL,$4000 | HL=4000. | ||
| ControlCode_02_0 | 9918 | LD C,L | C=L. | |
| 9919 | LD A,$20 | A=20. | ||
| ControlCode_02_1 | 991B | LD (HL),$00 | Write 00 to *HL. | |
| 991D | INC L | Increment L by one. | ||
| 991E | DEC A | Decrease A by one. | ||
| 991F | JR NZ,ControlCode_02_1 | Jump to ControlCode_02_1 if A is not equal to 20. | ||
| 9921 | LD L,C | L=C. | ||
| 9922 | CALL NextScreenBufferLine | Call NextScreenBufferLine. | ||
| 9925 | DJNZ ControlCode_02_0 | Decrease counter by one and loop back to ControlCode_02_0 until counter is zero. | ||
| 9927 | JP $995B | Jump to 995B. | ||
| Prev: 98CC | Up: Map | Next: 992A |