qdosmsq:pe:lblb
IOP.LBLB
This Trap writes a line of blobs to a window.
| Call Parameters | Return Parameters | ||
|---|---|---|---|
| D0.B | $74 | D0.L | Error return |
| D1.L | x,y start coordinates | D1.L | Preserved |
| D2.L | x,y end coordinates | D2.L | Preserved |
| D3.W | Timeout | D3.L | Preserved |
| A0.L | Window ID | A0.L | Preserved |
| A1.L | Pointer to blob | A1.L | Preserved |
| A2.L | Pointer to pattern | A2.L | Preserved |
Errors
| Code | Meaning |
|---|---|
| ERR.NO | Channel not open |
| ERR.BP | Bad data structure |
Notes
- All registers not mentioned above are preserved on return.
- Blobs are written continuously from the start address in D1 to the end address in D2.
- Blobs wholly or partially outside the window are ignored and no error is signalled.
Example
It is assumed here that A0.L contains the ID of the window.
lea blo,a1 ; Address of blob lea pat,a2 ; Address of pattern moveq #0,d1 ; Start at top left move.l #$C000C,d2 ; End position moveq #-1,d3 ; Tineout moveq #$74,d0 ; IOP.LBLB trap #3 tst.l d0 bne OOPS ---->
qdosmsq/pe/lblb.txt · Last modified: 2010/05/13 14:10 by george.gwilt
