Difference between revisions of "OSWORD &FE"
(Initial details of Z80 OSWORD &FE.)
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==OSWORD &FE (254) - Z80 MFM disk
==OSWORD &FE (254) - Z80 MFM disk (Z80 Tube OS)==
Latest revision as of 11:11, 5 September 2020
OSWORD &FE (254) - Z80 MFM disk access (Z80 Tube OS)
On entry: XY?0 =(send block length) XY?1 =(receive block length) XY!2 =
This is loaded by the Z80 Tube v2 client code from $.CPM.X or $.CPM.Y on the host filing system. The code is currently being disassembled.
OSWORD &FE (254) - DOS Text output (80x86 DOS, unimplemented)
The 6502 host support code in 6502.SYS installed by the 80x86 DOS just returns from OSWORD &FE.