On 11/10/2011 08:33 AM, Nicolas Welte wrote: >> 1541B ROM RELEASE NOTES: 251968-02 (16K byte, 300ns, checksum=$1A69) That's the second revision ROM used in the 1541C, the one with the track zero sensor. >> 3. SAVE-@ (SAVE with replace) is fixed. The variable NODRV is now a >> 16-bit addressable var, and the STLBUF routine steals the buffer locked by >> drive one. If the fix is in 251968-02, then all 1541-II should be safe since they use 251968-03. Makes me wonder about the 1551 and 157x. Did they get the fix too? Especially the 1551, there is only one ROM revision I know of. >> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * >> PLEASE NOTE: THIS ROM WILL _NOT_ WORK IN EARLIER 1541 PCB'S, WHICH >> REQUIRE DIFFERENT SIZED ROMS (8K), AMONG OTHER BOARD DIFFERENCES! >> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * If the difference is only the physical ROM format, then it should be possible to use 251968-03 in an old 1541 with some extra work. The other differences he's refering to might be the track zero sensor. Using 251968-03 should be no problem then, the 1541-II doesn't have one. Gerrit Message was sent through the cbm-hackers mailing listReceived on 2011-11-10 17:00:03
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