8-bit acorn software: other • Re: DFS 2.45 ROM layout

I've poked at my DFS 2.45 disassembly a bit more, and I'm increasingly confident that it doesn't call into ADFS...

Referring to my post above about how the transfer of control works, I searched for the bytes 20 AF BF, i.e. a JSR BFAF instruction and looked at the two bytes immediately following the call. The following is a table of the address of the JSR instruction and the address in the ADFS ROM called:All of these look completely plausible as the addresses to be called in the ADFS ROM are within he sideways ROM address space, though from what you say above, these may not actually be part of DFS but something else that happens to be in the same ROM as DFS.

EDIT: According to https://mdfs.net/Info/Comp/BBC/SROMs/MegaROM.htm, these are in a block of OS code rather than DFS. Is this code you have already moved into ROM 15 in the NT versions?

Statistics: Posted by Coeus — Sun Jan 21, 2024 11:57 pm

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