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Routines |
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| PrintString | 29832 | PUSH HL | Stash HL on the stack. | |||||
| 29833 | CALL ScreenAddress | Call ScreenAddress. | ||||||
| 29836 | LD A,(DE) | Fetch the attribute byte. | ||||||
| 29837 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 29838 | INC DE | Increment DE by one to point to the text of the string. | ||||||
| 29839 | EXX | Switch to the shadow registers. | ||||||
| 29840 | POP HL | Restore HL from the stack. | ||||||
| 29841 | CALL AttributeAddress | Call AttributeAddress. | ||||||
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This entry point is used by the routine at MenuWriteText.
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| PrintString_Loop | 29844 | EXX | Switch back to the normal registers. | |||||
| 29845 | LD A,(DE) | Fetch the character to print. | ||||||
| 29846 | BIT 7,A | If bit 7 is set (which signifies the end of the string), jump to PrintString_LastCharacter. | ||||||
| 29848 | JR NZ,PrintString_LastCharacter | |||||||
| 29850 | CALL PrintScreen | Call PrintScreen. | ||||||
| 29853 | INC DE | Increment DE by one. | ||||||
| 29854 | EXX | Switch to the shadow registers. | ||||||
| 29855 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 29856 | LD (HL),A | Copy the attribute byte to the screen. | ||||||
| 29857 | INC L | Increment L by one. | ||||||
| 29858 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 29859 | 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 | 29861 | AND %01111111 | Keep only bits 0-6 (i.e. strip the bit 7 terminator). | |||||
| 29863 | CALL PrintScreen | Call PrintScreen. | ||||||
| 29866 | EXX | Switch to the shadow registers. | ||||||
| 29867 | EX AF,AF' | Switch to the shadow AF register. | ||||||
| 29868 | LD (HL),A | Copy the attribute byte to the screen. | ||||||
| 29869 | RET | Return. | ||||||
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