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Routines |
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| PrintStringColour | 46397 | PUSH HL | Stash HL on the stack. | |||||
| 46398 | CALL ScreenAddress | Call ScreenAddress. | ||||||
| 46401 | LD A,(DE) | Fetch the attribute byte. | ||||||
| 46402 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 46403 | INC DE | Increment DE by one to point to the text of the string. | ||||||
| 46404 | EXX | Switch to the shadow registers. | ||||||
| 46405 | POP HL | Restore HL from the stack. | ||||||
| 46406 | CALL AttributeAddress | Call AttributeAddress. | ||||||
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This entry point is used by the routine at MenuWriteText.
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| PrintString_Loop | 46409 | EXX | Switch back to the normal registers. | |||||
| 46410 | LD A,(DE) | Fetch the character to print. | ||||||
| 46411 | BIT 7,A | If bit 7 is set (which signifies the end of the string), jump to PrintString_LastCharacter. | ||||||
| 46413 | JR NZ,PrintString_LastCharacter | |||||||
| 46415 | CALL PrintScreen | Call PrintScreen. | ||||||
| 46418 | INC DE | Increment DE by one. | ||||||
| 46419 | EXX | Switch to the shadow registers. | ||||||
| 46420 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 46421 | LD (HL),A | Copy the attribute byte to the screen. | ||||||
| 46422 | INC L | Increment L by one. | ||||||
| 46423 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 46424 | JR PrintString_Loop | Jump to PrintString_Loop. | ||||||
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Because the last character contains the terminator, it needs to be handled separately.
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| PrintString_LastCharacter | 46426 | AND %01111111 | Keep only bits 0-6 (i.e. strip the bit 7 terminator). | |||||
| 46428 | CALL PrintScreen | Call PrintScreen. | ||||||
| 46431 | EXX | Switch to the shadow registers. | ||||||
| 46432 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 46433 | LD (HL),A | Copy the attribute byte to the screen. | ||||||
| 46434 | RET | Return. | ||||||
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View the equivalent code in;
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