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Routines |
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TAB parameter handler. Called on the byte immediately following a 17 (TAB) control code. Sets the X position (8001) to the parameter value. If the parameter is less than the current X position (i.e., the cursor would move left), the Y position advances to the next row.
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| PrintHandler_Tab | 8E92 | LD HL,$8DE3 | Reset PrintState_Handler to PrintHandler (default handler). | |
| 8E95 | LD ($800A),HL | |||
| 8E98 | LD C,A | C=target X position (the TAB parameter). | ||
| 8E99 | LD A,($8001) | B=*PrintState_X (current X position). | ||
| 8E9C | LD B,A | |||
| 8E9D | LD A,C | A=target X; write target X to *PrintState_X. | ||
| 8E9E | LD ($8001),A | |||
| 8EA1 | SUB B | A=target X − current X. | ||
| 8EA2 | RET NC | Return if the cursor moved right or stayed (no row advance needed). | ||
| 8EA3 | LD HL,$8000 | HL=8000 (Y position pointer). | ||
| 8EA6 | CALL PrintHandler_AdvanceRow | Call PrintHandler_AdvanceRow to advance the Y position by one line. | ||
| 8EA9 | RET | Return. | ||
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