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Type: Posts; User: MikeP

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  1. Replies
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    In the above, I replaced the 2K Editor ROM with a...

    In the above, I replaced the 2K Editor ROM with a 4K ROM. Is this OK?
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    Cannot get Enhanced Edit ROM to work.

    I have been looking at Steve Gray's PET/CBM Editor ROM Project http://www.6502.org/users/sjgray/projects/editrom/index.html

    So, armed with my new EPROM programmer and a 4K HN462532G EPROM, I...
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    Thanks ConfusedYeti, that was very helpful. I...

    Thanks ConfusedYeti, that was very helpful. I bought the white version from Ebay. I have the newer case, so probably the white version would have come with the machine.
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    Which version of the manual for Osborne 1

    I have a newly acquired Osborne 1 and I would like to buy the "Osborne 1 User's Reference Guide", however, there seem to be 2 versions, one with a white cover and one with a blue cover. Can anyone...
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    Thanks Jannie, I don't think that it is a heat...

    Thanks Jannie, I don't think that it is a heat problem, because it has happened when booted from cold and when rebooted hot.
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    I know that reference :D I live in the US now,...

    I know that reference :D

    I live in the US now, but spent the first 25 years of my life living on the UK. I still occasionally watch the old classics like Fawlty Towers, Black Adder, Red Dwarf...
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    Audio Tapes for Commodore C2N/1530

    I felt the need to round out my Commodore PET with a tape deck, so that I can re-live my 80's experience. (Although back then, my tape deck was connected to my Sinclair ZX81 and my BBC micro).
    ...
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    HI Daver, Just wanted to say thanks for your...

    HI Daver,

    Just wanted to say thanks for your reply. I have been waiting for the screen to go blank like this again - And of course, now it has decided to behave itself. (It has blanked twice in...
  9. Using an SD2PET and a 4040 dual floppy on my CBM 8032

    Good evening to all,

    I have a SD2PET from thefuturewas8bit and an old 4040 dual floppy drive.

    Is there some way that I can connect both at the same time, so that I can copy files from the...
  10. Hi Guys, Last week, after I cleaned the...

    Hi Guys,

    Last week, after I cleaned the contacts with isopropyl alcohol, the SD2PET worked for a moment and then stopped, so I thought maybe it really is caused by bad contacts. Cutting to the...
  11. Hi Andy, It does look a little worn, here is a...

    Hi Andy,

    It does look a little worn, here is a photo. I'm sure it would benefit from cleaning. 66083

    What would be the best method to clean/deoxidize it?

    Thanks
    Mike
  12. Hi Dave_M, Thanks for posting the listing. I...

    Hi Dave_M,

    Thanks for posting the listing. I typed the whole program and everything reported as OK :(

    Mike
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    Intermittent screen problem on PET/CBM 8032

    Hello Commodore experts. I have an intermittent screen issue with my CBM 8032.

    Most of the time, it works fine, however after a period of time, the display disappears and I get this bright...
  14. Hi Dave_M, I tested again with 170 and 85. ...

    Hi Dave_M,

    I tested again with 170 and 85. Both work fine. I do not have tape capability, however, if the programs are small, I don't mind typing them in.

    Thanks
    Mike
  15. Hi Guys, My "SD2PET Future" arrived from The...

    Hi Guys,

    My "SD2PET Future" arrived from The TFW8b, unfortunately, if behaved exactly the same as the 2040 drive, so I think you guys are right that I probably have a faulty IEEE port.

    I looked...
  16. Hi Guys, Thanks for the great feedback. The...

    Hi Guys, Thanks for the great feedback.

    The IEEE cable is keyed and I have in correctly oriented in the correct port.

    When the drive unit is switched on and I then power on the PET, the drives...
  17. Lubricant for Commodore 2022 Tractor Printer

    Hi,

    Any ideas about what lubricant I should use on the rails that the print head slides along. I turned this printer on and it was clearly struggling to move the head, so I switched it off very...
  18. Help with fixing Commodore 2040 Dual Floppy drive

    Hello Commodore Gurus.

    A few months ago, I bought a broken CBM 8032 and the 2040 dual floppy unit. Dave_m, Daver2 and Jannie helped me with getting the 8032 working (Big Thanks).

    Today, for...
  19. It appears that my Twin Floppy drive is not...

    It appears that my Twin Floppy drive is not working :( I will start a new thread.
  20. Yes, I will be happy to send them to Dave_m or...

    Yes, I will be happy to send them to Dave_m or anyone else.

    As far as testing is concerned, I had to take the keyboard apart because several keys were not responding, but they all work now.
    I...
  21. Hi Dave, Here is a summary... It was...

    Hi Dave,

    Here is a summary...
    It was initially a failed 6545 CRT controller, which you and Daver2 identified. I de-soldered that and put in a socket and a MC6845P (Motorola). That fixed the...
  22. Hi Guys, I got a 6545 from Unicorn...

    Hi Guys,

    I got a 6545 from Unicorn Electronics. I plugged it in and this is the result:65933

    Thank you SO MUCH Daver2, Dave_M and Jannie - not just for fixing my PET, but for teaching me so...
  23. Thank you Jannie, the ones that I am trying to...

    Thank you Jannie, the ones that I am trying to use are the MC6845, so maybe all the problems are related to an incompatible 6845.

    I will order the UM part.
  24. I'm looking at the schematic, but I don't know...

    I'm looking at the schematic, but I don't know what this symbol means:
    65593
  25. I'm not sure if it makes a difference, but the...

    I'm not sure if it makes a difference, but the CRTC is actually a 6845. (I bought two of them and I have tried both - no difference). Daver, I would like to see a photo of that 1970's analogue...
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