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4 commits

Author SHA1 Message Date
tkchia cba54b205b plat/msdos386: refactor, firm up, and optimize
- refactor code for transfer buffer reads/writes, real mode
   int 0x21 calls, and assembler segment declarations
 - define transfer buffer size in one place
 - beef up error checking for transfer buffer operations
   (prevent buffer overflows)
 - also optimize such operations to transfer dword by dword
   where feasible
2022-08-26 17:31:28 +00:00
David Given dc1f69be83 Most of read and write now works; filename-based operations partially work; but
there's a nasty memory corruption somewhere which needs investigating.
2022-08-19 00:08:57 +02:00
David Given 48398b072a write() system calls work; start going through the libsys. 2022-08-17 22:34:06 +02:00
David Given b81ac5e2c3 Cut-and-paste the msdos86 libsys so the msdos386 stuff now at least builds. 2022-08-07 22:10:08 +02:00