qdosmsq:traps:trap_3:borp
Table of Contents
IOW_BORP etc
These SMSQ/E traps set GD2 colour borders.
| Trap | Value of D0.B | Action |
|---|---|---|
| IOW_BORP | $53 | Set palette colour border |
| IOW_BORT | $57 | Set true colour border |
| IOW_BORN | $5B | Set native colour border |
| Call Parameters | Return Parameters | ||
|---|---|---|---|
| D0.B | See above | D0.L | Error return |
| D1.L | Colour | D1.L | Corrupted? |
| D2.L | Size | D2.L | Preserved? |
| D3.W | Timeout | D3.L | Preserved. |
| A0.L | Channel ID | A0.L | Preserved. |
| A1.L | A1.L | Corrupted? | |
Errors
| ERR_NC | Not complete. |
| ERR_NO | Channel not open. |
Notes
- All registers not shown above are not used on entry and are probably preserved on exit.
- D1.L contains the colour right justified except for true colour which is left justified.
- The most significant word of D2 contains the stipple key (-1 to 3).
- The least significant word of D2 contains either -1 or the width.
- A border with solid colour can be drawn with one call by setting -1 in the most significant word of D2 and the width in the least significant word.
- A stippled border requires two calls. For the first a solid colour is drawn with D2.L = -1 and the colour in D1. For the second call the most significant word of D2 contains the stipple code, one of 0 to 3, the least significant word contains the border width and D1.L contains the second colour.
Example
An example is shown here.
qdosmsq/traps/trap_3/borp.txt · Last modified: 2009/05/17 13:35 by george.gwilt
