OSWORD &2A
&2A 42 Read PRISMA logical screen size Prisma On exit: XY?0..1 = maximum X coordinate (width-1) XY?2..3 = maximum Y corrdinate (height-1) The size of the logical screen will vary with the parameter set by the *WIDTH command.
PRISMA calls
- OSWORD &28 Read PRISMA information table
- OSWORD &29 Read PRISMA pixel value
- OSWORD &2A Read PRISMA logical screen size
- OSWORD &2B Read PRISMA colour palette
- OSWORD &2C Send VDU sequence direct to PRISMA
- OSWORD &2D Read last two PRISMA graphics cursors
- OSWORD &2E Read PRISMA base screen visible origin
- OSWORD &2F Read PRISMA graphics origin
- OSWORD &30 Read PRISMA interrupt status
- OSWORD &31 Direct call to PRISMA command
- OSWORD &32 Read position of PRISMA-3 roller screen
- OSWORD &33 Read/Write PRISMA overlay or nonvolatile memory
