&31 49 Direct call to PRISMA command Prisma
On entry:
XY?0 = command
XY?1 = number of parameters
XY?2.. = command parameters
Commands are:
XY?0 XY?1 XY?2..
0 *BLANK 0
1
2 *CENTRE 2
3 *COLOUR 1
4 *DOWN 1
5 *FIELD 0
6 *GENLOCK 0 or 1
7
8 *GOPT 1 or 2
9 *GRAPHICS 0 or 1
10
11 *GTV 1 or 2
12 *INIT 0
13 *LEFT 1
14 *OVERLAY 1 or 2
15 *PALETTE 1 or 2
16 *POINT 0 or 1
17 *PROFF 0
18 *RIGHT 1
19 *ROLLER 0 or 1
20 *ROTATE 1
21 *SPLIT 1
22 *TEXT 0 or 1
23 *TZOOM 1 or 2
24 *UNBLANK 0
25 *UP 1
26 *VKEY 1
27 *WIDTH 1
28 *WINDOW 1
29 *ZOOM 1 to 4
30
31 *FGRAB 1 or 2
32 *HOLD 1
33 *LEVEL 1 or 2
34 *LPHASE 1
35 *BUFFER 1
128 Extend or re-allocate working buffer
XY?1=buffer address high byte in I/O memory
XY?2=number of pages
129 Define pixel translation table
XY?1..2=translation table address in I/O memory
This call provides a fast interface to all of the PRISMA-3
*commands, except the *CONFIGURE, *GSAVE and *GLOAD commands
which require string parameters. Errors are generated in the
same way as the *commands.
The count at XY?1 is the number of parameters passed to the
call, not the number of bytes passed. A 16-bit parameter is
passed in two bytes but is counted as one parameter. For
instance, *ZOOM 5 is passed as 29,1,5,0.
PRISMA calls
See Also
Jgharston (talk) 19:56, 25 October 2015 (UTC)
