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HP 9872T Trouble Shooting
03-01-2023, 01:28 PM (This post was last modified: 03-01-2023 01:30 PM by cruff.)
Post: #16
RE: HP 9872T Trouble Shooting
By the way, the 9872C schematics seemed to show a discrepancy with the mapping of some of the address bus bits to the ROM address pins. I'm not sure if this is real or not, as it also showed the ROM enable signal (labeled as "F1") going to an address pin on the 36000 ROM instead of the CE pin.
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Messages In This Thread
HP 9872T Trouble Shooting - husmann - 06-09-2018, 07:19 PM
RE: HP 9872T Trouble Shooting - husmann - 06-09-2018, 09:56 PM
RE: HP 9872T Trouble Shooting - cruff - 06-09-2018, 11:48 PM
RE: HP 9872T Trouble Shooting - husmann - 06-10-2018, 01:31 PM
RE: HP 9872T Trouble Shooting - rprosperi - 06-10-2018, 02:11 PM
RE: HP 9872T Trouble Shooting - cruff - 06-10-2018, 04:29 PM
RE: HP 9872T Trouble Shooting - husmann - 06-10-2018, 08:05 PM
RE: HP 9872T Trouble Shooting - cruff - 06-10-2018, 09:37 PM
RE: HP 9872T Trouble Shooting - husmann - 06-10-2018, 10:49 PM
RE: HP 9872T Trouble Shooting - husmann - 06-13-2018, 11:38 PM
RE: HP 9872T Trouble Shooting - husmann - 06-14-2018, 09:41 PM
RE: HP 9872T Trouble Shooting - husmann - 06-10-2018, 06:47 PM
RE: HP 9872T Trouble Shooting - husmann - 06-16-2018, 10:10 PM
RE: HP 9872T Trouble Shooting - cruff - 03-01-2023 01:28 PM



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