From: Greg King (gngking_at_erols.com)
Date: 2002-09-04 10:46:42
-----Original Message----- From: William Levak Date: Wednesday, August 21, 2002 06:06 PM > > I have compared the the two 8 K (324878-01 and 324878-02) 8296 ROMs on > funet with the 16 K (324746-01) ROM. There were very few matches (less > than 1000 out of 16 K). On examining the contents of the two 8 K ROMs, I > could not see any of the text that should be there. Also, the fill-bytes > at the end of the ROMs are $BA instead of the usual $AA. > > I, therefore, alterred the file to set bit 4 low wherever it was high. This > makes the fill-byte $AA as it should be. It also makes the text messages > readable, although still partially garbled. I got about 2000 matches > between the two versions this way. > > The rest of the two 8 K ROMs appear to be randomly garbled. 1. Bit 4 in both 8k ROMs is "stuck." 2. And, bit 5 in the first one is "stuck." 3. The daughter-board which holds those ROMs has an unusual memory-map: the first ROM sits in the middle of the second one! They match the 16k ROM after I compensate for those three conditions. Message was sent through the cbm-hackers mailing list
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