Page 1 of 4 1234 LastLast
Results 1 to 10 of 40

Thread: 8501 7501 CPU substitute for C16 plus4 (85MC01)

  1. #1
    MCes's Avatar
    Join Date
    Sep 2013
    Country
    Italy
    Region:
    Rome
    Posts
    490
    Feedback
    35 (97%)

    Default 8501 7501 CPU substitute for C16 plus4 (85MC01)

    Click image for larger version. 

Name:	s-l1600.jpg 
Views:	33 
Size:	195.1 KB 
ID:	157770Click image for larger version. 

Name:	s-l1600b.jpg 
Views:	25 
Size:	206.6 KB 
ID:	157771

    If you have your old Commodore 16 or plus4 that doesn't work
    you will know that the CPU is the first reason for failure on these machines,
    pity that the CPU was produced directly by Commodore and therefore nowhere to be found except at prohibitive prices.

    Various solutions have been devised to replace the functions of this CPU,
    with different costs and features.

    The project I propose represents an excellent compromise point between compatibility and cost,
    thanks to the use of a CPLD and a NEW C-MOS CPU the absorption of the 85MC01 becomes about one third of the original
    stressing less the power supply and lowering the internal temperature of the machine due to less thermal dissipation,
    also for the benefit of the other old chips.

    The most modern C-MOS versions have removed anomalous CPU behaviors (illegal opcodes)
    that unfortunately some programmers have exploited in their software species of recent production,
    this means that the programs of the time should run almost all, those of more recent production could sometimes be incompatible.
    The stress tests of the 85MC01 were carried out with various games / cartridges / auto-loaders / tapes / disks / jiffydos, etc ... and it never crashed, but I honestly carry this compatibility limit.

    For greater peace of mind 85MC01 can be bought, tried, and if it does not satisfy it can be returned
    (within 2 weeks) with refund (not shipments).

    More details:
    http://www.amibay.com/showthread.php...rk-in-progress

    The cost:
    29€+untracked shipping cost: PPal "FOR FRIENDS" (I can't be responsible for untracked shipping)
    29€+tracked shipping cost + eventual PPal fees: PPal "COMMERCIAL"

    This mod will be assembled on request, also on sale elsewhere.

    Now is also available for the C16 a specific solution: CPU4C16
    http://www.amibay.com/showthread.php...-C16-(CPU4C16)
    Last edited by MCes; 26th August 2020 at 20:31.

  2. #2
    kikems's Avatar
    Join Date
    Sep 2015
    Country
    Spain
    Region:
    Oviedo
    Posts
    11
    Feedback
    0

    Default

    I'm interested in one unit.

  3. #3
    MCes's Avatar
    Join Date
    Sep 2013
    Country
    Italy
    Region:
    Rome
    Posts
    490
    Feedback
    35 (97%)

    Default

    Quote Originally Posted by kikems View Post
    I'm interested in one unit.
    It was sent!

  4. #4
    Inactive Member bmamo's Avatar
    Join Date
    Oct 2018
    Country
    Malta
    Region:
    Xghajra
    Posts
    35
    Feedback
    1 (100%)

    Default

    I'm interested in one, pm me?

  5. #5
    MCes's Avatar
    Join Date
    Sep 2013
    Country
    Italy
    Region:
    Rome
    Posts
    490
    Feedback
    35 (97%)

    Default

    some pieces available...

  6. #6
    Inactive Member jbuchner's Avatar
    Join Date
    Dec 2019
    Country
    Chile
    Region:
    Santiago
    Age
    42
    Posts
    1
    Feedback
    0

    Default

    Quote Originally Posted by MCes View Post
    some pieces available...
    Im interested in one too, lets talk

  7. #7
    MCes's Avatar
    Join Date
    Sep 2013
    Country
    Italy
    Region:
    Rome
    Posts
    490
    Feedback
    35 (97%)

    Default

    Quote Originally Posted by jbuchner View Post
    Quote Originally Posted by MCes View Post
    some pieces available...
    Im interested in one too, lets talk
    Hi juchner,
    PM me your information requests

  8. #8
    I look like Gizmo Treasurer
    Lead Moderator
    Amibayer!
    Administrator
    davideo's Avatar
    Join Date
    Jan 2008
    Country
    UK
    Region:
    Boston, Lincs
    Posts
    14,882
    Feedback
    181 (100%)

    Default

    Quote Originally Posted by MCes View Post
    Quote Originally Posted by jbuchner View Post
    Quote Originally Posted by MCes View Post
    some pieces available...
    Im interested in one too, lets talk
    Hi juchner,
    PM me your information requests
    You may have to PM him as he hasn't got enough posts to send PMs

  9. #9
    spcbm's Avatar
    Join Date
    Sep 2014
    Country
    Spain
    Region:
    Barcelona
    Posts
    402
    Feedback
    67 (100%)

    Default

    I'm interested in one unit, shipping to Spain.
    Interested also in other item from you, please send me paypal details and total price, thanks.

  10. #10
    spcbm's Avatar
    Join Date
    Sep 2014
    Country
    Spain
    Region:
    Barcelona
    Posts
    402
    Feedback
    67 (100%)

    Default

    Payment sent

Page 1 of 4 1234 LastLast

Similar Threads

  1. Wanted MOS 8501 or 7501 CPU for C16/C116 - 4 pcs
    By tibsi in forum Commodore
    Replies: 0
    Last Post: 17th May 2017, 14:54
  2. Wanted Commodore Plus 4 MOS 7501 or 8501 CPU
    By Retro_Lover in forum Commodore
    Replies: 3
    Last Post: 27th September 2016, 00:26
  3. Wanted CPU MOS 7501 / 8501 for C16,C115,Plus/4
    By Flash951 in forum Commodore
    Replies: 0
    Last Post: 7th January 2016, 23:54
  4. Closed C16 / C116 / Plus4 CPU 7501 or 8501
    By alke01 in forum Found Archive
    Replies: 0
    Last Post: 16th August 2012, 06:30
  5. Closed Mos-7501/8501
    By Flare in forum Found Archive
    Replies: 0
    Last Post: 14th April 2012, 17:25

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •