DOS and disk operations refactoring; faster loads#36
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avolkov76 wants to merge 35 commits intodatajerk:masterfrom
Open
DOS and disk operations refactoring; faster loads#36avolkov76 wants to merge 35 commits intodatajerk:masterfrom
avolkov76 wants to merge 35 commits intodatajerk:masterfrom
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…: symbolic consts, structs, routine names, extra DOS init; * asm object size warnings (there shall be overruns); Both FileMan and RWTS disk format currently work (on my testbeds), controlled by USE_RWTS_FORMAT symbol in diskload2.s
…erl (-dep); friendly 6502 addresses
…8000 where the loaded checksum byte is the last byte on a page (endload=$xx00, checksum at $xxFF), and the checksum algo incorrectly consumes an extra byte ($xx00) from the next page.
…s needs "b" fopen() mode for binary files read and write; POSIX will ignore "b".
…2t in place of hard-coded 6502 addresses.
…nes converted from .inc files; makes relocating the objects easier.
… object modifications
* High-level DOS code removed entirely; no FileMan; * Direct RWTS format(4) call; * ~9 seconds removed from the process.
…5 libs to avoid a make failure
…ing for which platform they were built)
… firmware protocol; * For safety of established user base, following the Principle of Least Surprise, the scan for controller starts with slot 6; slot 7 is skipped (unlike the IIe). Starting slot is easily adjustable.
…ifted by 1 page; add a warning for the future. (Interestingly, by the time diskload2 calls inflate for the very first time, the first page of diskload2 has served its purpose and never executes again. Inflate destroys the first page, but it is no longer needed, so this never surfaced in testing. It is possible to document the behavior as a "feature" instead and save 1 page of RAM.)
* conservatively set to 6,5,4 here, but can be any order, like 6,7,5,4,2.
…bytes; will need them later)
… unreliable seek to 0 after warm starts.
…xists that start_table (infdata) in diskload2 will cross page boundary, and padding to end of page should account for that.
…e time (formriting). Removes ~24 seconds from the "format" option diskload process. This is a fast variant, using self-modifying code, faithfully reproducing DOS timing.
…m). The bug would probably never surface because we cannot write to I/O pages.
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Includes all fixes along the way.