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Routines |
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Sets the pixels of the whole screen to zero, using the stack.
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| ClearScreen | A8E1 | LD ($5CD8),SP | Save the stack pointer. | |
| A8E5 | LD SP,$5800 | Point the stack at the end of the pixel file. | ||
| A8E8 | LD BC,$000C | Set the number of pushes to 0C00. | ||
| A8EB | LD DE,$0000 | Set the value to 00. | ||
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This entry point is used by the routine at ResetAttributes.
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| ClearScreen_Fill | A8EE | PUSH DE | Write two bytes. | |
| A8EF | DJNZ ClearScreen_Fill | Jump back until a block of pushes has been done. | ||
| A8F1 | DEC C | Decrease the number of blocks by one. | ||
| A8F2 | JR NZ,ClearScreen_Fill | Jump back until all of the blocks have been done. | ||
| A8F4 | LD SP,($5CD8) | Restore the stack pointer. | ||
| A8F8 | RET | Return. | ||
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