On Saturday, June 27, 2020 at 14:48, grant--- via cctech wrote: > 12992-80011 > 91740-80070 > 91740-80071 > 91740-80072 > > there is a set of 91740 on bit savers but with a suffix of 67-69 ?
These are the original DS/1000 ROMs (date code 2003) without the 7974 loader extension. That was added in 1985 (date code 2540) with the 80070-72 set. The 12992-80011 ROM loads the extension from the DS/1000 ROMs into memory for execution. > any help would be appreciated. Contact me off-list if you still need copies of these ROM files. -- Dave