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Routines |
| Prev: F83A | Up: Map | Next: FB52 |
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Used by the routine at TitleScreen.
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| ResetThemeTune | FB3A | LD HL,$FD09 | Write FD09 to *FB55. | |
| FB3D | LD ($FB55),HL | |||
| FB40 | LD HL,$FE30 | Write FE30 to *FB59. | ||
| FB43 | LD ($FB59),HL | |||
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This entry point is used by the routine at TitleScreen.
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| HandlerThemeTune | FB46 | DI | Disable interrupts. | |
| HandlerThemeTune_Loop | FB47 | CALL PlayThemeTune | Call PlayThemeTune. | |
| FB4A | CALL $028E | Call KEY_SCAN. | ||
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Handle if no keys are being pressed, for reference:
In all instances the E register is returned with a value in the range of +00 to +27 the value being different for each of the forty keys of the keyboard, or the value +FF for no-key. |
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| FB4D | INC E | Set the zero flag if no keys have been pressed. | ||
| FB4E | JR Z,HandlerThemeTune_Loop | Jump back to HandlerThemeTune_Loop unless any key has been pressed. | ||
| FB50 | EI | Enable interrupts. | ||
| FB51 | RET | Return. | ||
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