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Routines |
| Prev: BE45 | Up: Map | Next: BE7F |
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Used by the routine at PrintDayCaption.
Prints a line of text, which starts with its attribute, using the font whose address is held in FontPointer. The last character of the text has bit 7 set. Each character cell has its attribute set as well. The pixel position is on the stack.
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Fetch the attribute from the text.
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| PrintText | BE4C | POP BC | Copy the pixel position to BC (using the stack). | |||||
| BE4D | PUSH BC | |||||||
| BE4E | CALL CalculateBufferAddress | Call CalculateBufferAddress. | ||||||
| BE51 | LD L,C | Copy it to HL. | ||||||
| BE52 | LD H,B | |||||||
| BE53 | LD A,(DE) | Fetch the attribute of the text. | ||||||
| BE54 | EX AF,AF' | Keep the attribute in AF'. | ||||||
| BE55 | INC DE | Move on to the first character. | ||||||
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This entry point is used by the routine at PrintTextSingleColour.
Find the attribute address.
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| PrintText_Setup | BE56 | EXX | Switch to the shadow registers. | |||||
| BE57 | POP HL | Fetch the pixel position. | ||||||
| BE58 | PUSH DE | Stash the address of the text on the stack. | ||||||
| BE59 | CALL CalculateAttributeAddress | Call CalculateAttributeAddress. | ||||||
| BE5C | LD L,E | Copy it to HL. | ||||||
| BE5D | LD H,D | |||||||
| BE5E | POP DE | Restore the address of the text from the stack. | ||||||
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Print each character and set its attribute.
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| PrintText_NextCharacter | BE5F | EXX | Switch back to the main registers. | |||||
| BE60 | LD A,(DE) | Fetch a character of the text. | ||||||
| BE61 | BIT 7,A | Jump to PrintText_LastCharacter if it is the last. | ||||||
| BE63 | JR NZ,PrintText_LastCharacter | |||||||
| BE65 | PUSH DE | Stash the address of the text on the stack. | ||||||
| BE66 | CALL PrintCharacter | Call PrintCharacter. | ||||||
| BE69 | POP DE | Restore the address of the text from the stack. | ||||||
| BE6A | INC DE | Move on to the next character. | ||||||
| BE6B | EXX | Switch to the shadow registers. | ||||||
| BE6C | EX AF,AF' | Fetch the attribute. | ||||||
| BE6D | LD (HL),A | Set the attribute of the cell. | ||||||
| BE6E | INC L | Move on to the next cell. | ||||||
| BE6F | EX AF,AF' | Keep the attribute in AF'. | ||||||
| BE70 | JR PrintText_NextCharacter | Jump to PrintText_NextCharacter. | ||||||
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Print the last character.
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| PrintText_LastCharacter | BE72 | AND %01111111 | Keep only bits 0 to 6. | |||||
| BE74 | PUSH DE | Stash the address of the text on the stack. | ||||||
| BE75 | CALL PrintCharacter | Call PrintCharacter. | ||||||
| BE78 | POP DE | Restore the address of the text from the stack. | ||||||
| BE79 | INC DE | Move on past the text. | ||||||
| BE7A | EXX | Switch to the shadow registers. | ||||||
| BE7B | EX AF,AF' | Fetch the attribute. | ||||||
| BE7C | LD (HL),A | Set the attribute of the last cell. | ||||||
| BE7D | EXX | Switch back to the main registers. | ||||||
| BE7E | RET | Return. | ||||||
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