Hp 21mx loader rom set

J. David Bryan jdbryan at acm.org
Sun Jun 28 17:02:47 CDT 2020


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



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