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    Final post (I hope). There is now a final...

    Final post (I hope).

    There is now a final patched version of the HAL PCG6500 PACMAN game with audio (Note: It is difficult trying to play the game and video at the same time, so I tried to show...
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    Hi You should be able to find 4116 ram chips...

    Hi

    You should be able to find 4116 ram chips on eBay.... I have purchased tms and itt ic’s and they have been ok.

    I will check the rectifier diode on my board ... will take a few days.

    Cheers
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    I don’t recall any schematics but I found the...

    I don’t recall any schematics but I found the following link useful in diagnosing ram issues for this board

    http://www.primrosebank.net/computers/pet/repairs/pet_repairs_ext_ram.htm

    Another...
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    Thanks ... I have patched the Pac-Man game...

    Thanks ... I have patched the Pac-Man game further to include additional animation in the ghosts.

    In particular, their movement including change in direction of their eyes.

    A video has been...
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    Thanks Steve. I have also heavily patched the...

    Thanks Steve.

    I have also heavily patched the HAL PCG6500 Pac-Man game which dynamically changes the characters in the Rom as the game plays. Changes had to be made to how it displayed the...
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    Final Post on this subject - I got hold of a...

    Final Post on this subject - I got hold of a couple of Steve's MultiRom Boards and replaced the Multi-Edit Rom 40/80 board which makes for a much cleaner installation. Then used the other one to...
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    Just a small update, Steve suggested try also...

    Just a small update, Steve suggested try also using the Comspec 40/80 clone board as an alternative solution ... using the multi edit rom part of the combo board too switch edit Roms.

    I had to...
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    Added some photos 532985329953300

    Added some photos

    532985329953300
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    This probably warrants a new thread but wanted to...

    This probably warrants a new thread but wanted to keep it all self contained.

    Steve Gray sent me one of his Multi-EditorROM + 40/80 Column Switcher boards which I built up and interfaced it to...
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    PET 64K add-on board make by Paradox INC

    Hello,

    I have a 64k addon board made by Paradox Inc for the Commodore PET and wondered if anyone has come across it (I have spoken with JonB who also has one but with no documentation sadly) ?
    ...
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    Hi Jon The SS board needs to get access to the...

    Hi Jon

    The SS board needs to get access to the video address lines and uses this piggy back chip to do so. It has been drilled out to stop it from working as an actual IC and becomes a simple...
  12. Hi Jon, The pcb with LEDís reminds me of...

    Hi Jon,

    The pcb with LEDís reminds me of similar setups I played with at college, where sending various values down the user port resulted in different lighting sequences. Mundane by todayís...
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    Hi Jon, Great, glad it works now. The Only...

    Hi Jon,

    Great, glad it works now. The Only software I know of is the machine code and basic programs I have been using to produce the images on my Flickr page. I will send the code to Steve after...
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    Wow... that may explain the garbage screen etc. ...

    Wow... that may explain the garbage screen etc.

    I will check what ROMs I have. I did have a basic 2 edit rom but cannot recall if it repurposed the eprom. It’s a 2716 eprom (2k).

    Andy
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    Hi Jon. Yes the Graphix rom needs to be...

    Hi Jon.

    Yes the Graphix rom needs to be installed. I think there is something that has gone bad on your motherboard. Let me see what I have in my box of stuff.

    I know I have an original...
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    Interestingly, I just removed the special...

    Interestingly, I just removed the special character rom and turned on my PET. It gave a blank screen with a flashing cursor (things are inverted with the SS board as usually when you remove the...
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    I can send over the binary for you to burn a new...

    I can send over the binary for you to burn a new EPROM 2532 if you have one (I dumped it ages ago) .... just PM me your email address.
    Actually, if you can read the ROM and dump it to a BIN file I...
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    Hi Jon OK there may be a few more things going...

    Hi Jon

    OK there may be a few more things going on here but I want to be sure I understand that I am reading.

    Have you checked the ribbon cable connection from the SS (Supersoft) board to the...
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    Wow, thanks for doing this. This is nice stuff to...

    Wow, thanks for doing this. This is nice stuff to read through.

    I wonder if there any supersoft graphix software tapes in your box of software.:D
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    Ok the Mitsubishi chip is the modified character...

    Ok the Mitsubishi chip is the modified character rom. What you are seeing is very likely due to poor connections between the supersoft board, the character rom socket and also this chip. Ensure you...
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    If your post was a typo, then the board is...

    If your post was a typo, then the board is initialising ok but cannot clear the memory. Please check the connections as per the installation manual you posted.

    Andy
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    Did you try SYS59650,C.... you message said...

    Did you try SYS59650,C.... you message said 59660,c
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    Where are you located in the world ?

    Where are you located in the world ?
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    Out of curiosity, did you get any floppy discs...

    Out of curiosity, did you get any floppy discs with the package ?

    Also do you have an eprom programmer that can read 2532 EPROMs?
    It would be nice to dump the graphix Rom as it seems a later...
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    Steve, thanks that would be great!. I will...

    Steve, thanks that would be great!.

    I will catalogue what I have done. There’s a mixture of simple saved images from the boards memory, to more complex routines and custom display/animation...
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