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  • Gary C's Avatar
    Yesterday, 12:58 PM
    Gary C replied to a thread Omg in Tandy/Radio Shack
    I bet it would be fine. Bit of a clean, new RIFA's just to be on the safe side. Drives would probably benefit from a clean. Mine sat on a shelf...
    5 replies | 275 view(s)
  • Gary C's Avatar
    Yesterday, 12:46 PM
    Are they the 128 cycle refresh chips or the 256 cycle refresh. If its the latter, they wont work but have similar part numbers. info here...
    7 replies | 138 view(s)
  • Gary C's Avatar
    Yesterday, 08:33 AM
    And as its a 4P, its just a jumper to move once the chips are in by the looks. http://www.classiccmp.org/dunfield/trs80/m4memory.pdf
    7 replies | 138 view(s)
  • Gary C's Avatar
    Yesterday, 03:49 AM
    Just bought a load from Bulgaria, all MN4164P, 150ns with the 128 bit refresh that seems to be the real problem They are on Ebay at 1.42 for two...
    7 replies | 138 view(s)
  • Gary C's Avatar
    Yesterday, 03:33 AM
    Gary C replied to a thread Finally started in Tandy/Radio Shack
    Bought the MN4168P-150 memory chips from here On ebay MN4164P-15-Page-Mode-DRAM-64KX1-150ns-NMOS-USED-2-pieces 10.92 for 16 and all of them...
    36 replies | 2803 view(s)
  • Gary C's Avatar
    July 17th, 2019, 10:51 AM
    Gary C replied to a thread vt420 gripes in DEC
    Anyone have the circuit diagram for the VT420 ? Managed to get one but the display was very dim and now I cant see it at all. The heater in the...
    13 replies | 858 view(s)
  • Gary C's Avatar
    July 14th, 2019, 07:18 AM
    Gary C replied to a thread Finally started in Tandy/Radio Shack
    Love how the original RAM chips have a gold label with the Tandy Corporation logo on them :) Anyone tried to remove it and stick it on a new chip
    36 replies | 2803 view(s)
  • Gary C's Avatar
    July 13th, 2019, 01:00 AM
    Gary C replied to a thread Finally started in Tandy/Radio Shack
    Latest Disk alignment seems to be better now and have setup the FD55A in my old PC so can write disks (That was a game, PSU wonky,hdd dead and...
    36 replies | 2803 view(s)
  • Gary C's Avatar
    July 13th, 2019, 12:43 AM
    Gary C replied to a thread hi in Introductions
    Welcome :) Sord M5, now theres something I havent heard of for years. Vintage computers, how to re-live a misspent youth :)
    3 replies | 95 view(s)
  • Gary C's Avatar
    June 24th, 2019, 01:32 AM
    Price seems a bit high if you compare it to this complete system...
    7 replies | 797 view(s)
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About Gary C

Basic Information

About Gary C
Biography:
Started with the UK national electricity company, the CEGB in 1983. Moved in to engineering and worked on DPS6, Intel Multibus, DEC VAX/PDP and programmed in CEGB CUTLASS.
Now in operations
Location:
Lancashire
Interests:
Vintage computers and old cars
Occupation:
Assistant shift manager - Nuclear operations

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May 26th, 2018
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