IOP.PINF
Gets pointer information.
| Call Parameters | Return Parameters |
|---|---|
| D0 = $70 | D0 = Error return |
| D1 = pointer version (n.nn) | |
| D3.W = timeout | D3 is preserved |
| A0 = channel ID | A0 is preserved |
| A1 = window manager vector |
No other registers are used.
Errors
| ICHN | channel not open |
| IPAR | PTR_GEN not there |
Notes
- The version number is a four byte ASCII string eg '1.21'
- The window manager vector contains the entry points for the routines in WMAN.
- The window manager vector is zero if WMAN is not present.
Example
This shows how to check the presence of PE and also to store the WMAN vector.
moveq #$70,d0 IOP.PINF moveq #-1,d3 timeout movea.l id(a6),a0 channel ID trap #3 tst.l d0 bne oops ----> no PTR_GEN move.l a1,d0 is WMAN there? . . beq oops ----> . . no! move.l a1,wmvec(a6)
norman