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Matrix Brandy on RISC OS
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The following documents are not included in the RISC OS distribution, due to
the differences in the implementation:
compiling.txt: Excluded because the process will vary depending on which
compiler is used, and whether cross-compiling.
graphics.txt: Matrix Brandy offers no internal graphics support on RISC
OS, instead the VDU codes are passed through to the
underlying OS. *REFRESH and other commands that interact
with the SDL layer, thus, are recognised but do nothing.
User-defined screen modes via *NewMode are not available.
Mode7.txt: As with graphics, MODE 7 support is implemented by RISC OS,
rather than in Matrix Brandy. Thus the OSWORDs to read and
write the teletext font are not available, nor are the
facilities to change the SAA505x code page or black as a
colour on older RISC OS versions.
osbyte.txt: OSBYTE is passed through to RISC OS to handle, no emulation
is offered by Matrix Brandy.
All display output is passed to the operating system "raw", as the internal
versions of ARM BBC BASIC would, and are handled by RISC OS.
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