Hi all, Small question on JiffyDOS versions. I recently acquired a 1581 that came with JiffyDOS installed whch was labelled as v6.01. I had read from the CMD JD literature that that JD included all the Commodore firmware patches from the latest available ROM version at the time. After poking around in the ROM. it seems that this 1581 JD ROM does not include the SEI patch that Commodore released with the 318045-02 ROM which disabled interrupts when processing the command queue. There's only 8 bytes difference between the -01 and -02 official ROMS, 3 bytes to jump to the patch code, 4 bytes for the patch code, and one byte to disable the ROM checksum check at /RESET. Details below. Can anyone familiar with JD versions confirm that the 1581 JD ROM did not include Commodore's patch? Differences below. 318045-01 318045-02 Jiffy 601 AF8C 3A 00 3A C160 6C 4C 6C C161 48 AF 48 C162 00 C5 00 C5AF FF 78 FF C5B0 FF 6C FF C5B1 FF 48 FF C5B2 FF 00 FF RobReceived on 2023-01-10 03:00:01
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