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  • Gary C's Avatar
    May 17th, 2019, 07:14 AM
    Ok, I'm confused. With it almost working, I though I would try another Disk II interface I had about that didnt work in my working machine, and...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 17th, 2019, 06:12 AM
    So its an, un-terminated bus by the look So, not sure were to go now.
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 17th, 2019, 04:02 AM
    Interesting developments Voltages all appear to be correct and dont dip or otherwise during device access. DEVSEL and I/OSEL are...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 15th, 2019, 06:18 AM
    However, the Disk and the interface (and the floppy too) have all been tested on another Apple II so they are working fine. Just working through...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 14th, 2019, 09:27 AM
    Its a working interface and drive and prodos floppy, checked before and after in my main machine and gives no problems (this unit is just a solitary...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 13th, 2019, 09:41 PM
    cheers actually managed to locate the faulty chip with a bit if basic. need to diagnose the problem with the slots, cant get a working...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 13th, 2019, 11:34 AM
    D4 swapped for new chip and no more memory faults. Still wonr boot from drive. Anyone have the diagnostic as a wav file as the cassette...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 12th, 2019, 11:57 AM
    Thinking D4 as chief suspect, try a swap tomorrow.
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 12th, 2019, 10:04 AM
    Ah Ha ! running a simple basic program memory test shows bit 2 stuck high from 16384 to 32767 or 0x4000 to 0x7FFF, need to locate the chips in the...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 12th, 2019, 03:02 AM
    Mr Willegal's RAM test typed into monitor and run. Its showing no problems with the RAM, left running for half an hour and showing all passes,...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 12th, 2019, 01:57 AM
    Oh yes. I dont have a ROM card, but I could type it directly into the monitor now the keyboard works. Cant be any worse than copying programs from...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 11th, 2019, 08:11 AM
    I do have a RAM problem, which got the board going when I removed them all and put them back in random positions which is why I want to get it...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 11th, 2019, 07:53 AM
    Keyboard interface completed. Used a mega 2560 and the ps2 keyboard library. The a simple matter of writing the 7 bit number to 7 different digital...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 5th, 2019, 12:56 PM
    It is fun Its the time thats the problem
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 5th, 2019, 09:12 AM
    Gary C replied to a thread Vt Emulation in DEC
    Cheers. The VAX 4000/96 and MicroVAX 3300 are now in the boot of the car awaiting their trip home. I have managed to blag a pizza box VT 525 and...
    9 replies | 398 view(s)
  • Gary C's Avatar
    May 5th, 2019, 09:05 AM
    Gary C replied to a thread New toys in DEC
    Actually, when its time for them to return, drop me a line as I probably could ease things at this end to get the kit shutdown and moved in an...
    24 replies | 1708 view(s)
  • Gary C's Avatar
    May 4th, 2019, 09:32 PM
    Ah, I dont intend to get involved with reading X-Y and inputing it to the AY-5-3600, I just intend to replace the ribbon cable at the MB comming from...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 4th, 2019, 12:02 PM
    Not sure I get what you mean. With the AY-5-3600 encoder, the key code is output and held until the next strobe goes high ? So with an Arudino...
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 3rd, 2019, 03:07 AM
    Well Finally got round to this MB again. Hacked an ATX supply (with a -5V) to power it up on the bench and was getting <?> all over the screen....
    88 replies | 7242 view(s)
  • Gary C's Avatar
    May 1st, 2019, 11:26 PM
    Gary C replied to a thread Vt Emulation in DEC
    Thank you
    9 replies | 398 view(s)
  • Gary C's Avatar
    May 1st, 2019, 01:11 PM
    Gary C replied to a thread Vt Emulation in DEC
    Cheers, will have a look Probably wont use it anytime soon, but would like Regis too. Got a VT525 coming home on sunday though, so that should...
    9 replies | 398 view(s)
  • Gary C's Avatar
    April 29th, 2019, 08:31 AM
    Gary C replied to a thread New toys in DEC
    And when I retire, I plan to do a tour of the states. Hopefully pop in ! But again, thats not quite near enough yet.
    24 replies | 1708 view(s)
  • Gary C's Avatar
    April 29th, 2019, 07:44 AM
    Gary C replied to a thread New toys in DEC
    Ah, thats good news. We tend to get all 'security' about computer disposals and I would hate for them to die. Thing about the old RICM DPS's is they...
    24 replies | 1708 view(s)
  • Gary C's Avatar
    April 29th, 2019, 07:15 AM
    Gary C replied to a thread New toys in DEC
    Things are coming together. Microvax 3100 is now home a microvax 3300 BA215 mini tower with two RF30 disk drives A vaxstation 4000 model 96,...
    24 replies | 1708 view(s)
  • Gary C's Avatar
    April 27th, 2019, 04:53 AM
    Gary C started a thread Vt Emulation in DEC
    Just getting my VAX systems sorted and want to know what people would recommend as a terminal emulator using telnet or LAT possibly ? (been a long...
    9 replies | 398 view(s)
  • Gary C's Avatar
    April 25th, 2019, 08:34 AM
    https://www.ebay.com/itm/VECTOR-GRAPHICS-VECTOR-MZ-PERSONAL-COMPUTER-SEVERAL-CARDS-VINTAGE-COLLECTIBLE/392249645380?hash=item5b53e69944:g:UCYAAOSwA3dY...
    10 replies | 463 view(s)
  • Gary C's Avatar
    April 24th, 2019, 10:22 AM
    Gary C replied to a thread Arrrgh! in Later PCs
    Not sure, windows website only is offering one and it wont install. Didnt use any adapter as i was just cobbling together what was lying about.
    15 replies | 792 view(s)
  • Gary C's Avatar
    April 24th, 2019, 10:15 AM
    Gary C replied to a thread Arrrgh! in Later PCs
    Well, thats what i get when i tried to install it :) Anyway, found the dimm had jumped out of its socket, so back on track.
    15 replies | 792 view(s)
  • Gary C's Avatar
    April 23rd, 2019, 12:56 PM
    Gary C started a thread Arrrgh! in Later PCs
    So, got an old athlon 64 down from the loft to setup to run ADTpro for my apple. Forgot it was so heavily spammed and spywared from when the kids...
    15 replies | 792 view(s)
  • Gary C's Avatar
    April 22nd, 2019, 11:36 AM
    I would agree. My Europlus had a blown 6502, but the PSU was a mess !
    19 replies | 783 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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