Results 1 to 5 of 5

Thread: genesis 3 incompatible fix

  1. #1
    Amibayer! jimbob005's Avatar
    Join Date
    May 2008
    Country
    swadlincote,uk
    Region:
    swadlincote
    Age
    36
    Posts
    461
    Feedback
    10 (92%)

    Default genesis 3 incompatible fix

    author=internet
    The 3rd in the series, named the Genesis 3, was released by Majesco, not SEGA. Although it was under permission of SOA, that model is MK-1641, the MK 1601 is the original, and the MK 1631 is the second of the series.
    The Genesis 3 does not have the Z80 processor, and that means the following:
    1. Unable to run the MS convertor as it needs the Z80 chip which is the brain of the SMS.
    2. Unable to run Game Genie, the Z80 must have played a role in the use of this for code break ins.
    3. Unable to run special games such as Sega's Virtua Racing, which again uses the Z80.
    4. Unable to run the 32x
    The obvious disability of the Genesis 3 is the missing expansion port that used the purpose of running the SegaCD system

    I am have restore the first 4 problems with the genesis 3 as the system is so small to have a the segacd slot on it .

    well heres a pic of the insides of the gen 3 befor any things gone on this is a va1 gen 3 there is an va2 board too.


    the genesis 3 va1 model here is the missing asic pins to the cart pins and there ops
    ___________________________________________________________________
    | B1 |Audio circuit | 32X audio left
    |------|--------------------|---------------|--------------------------------
    | B3 | Audio circuit | 32X audio right
    |------|--------------------|---------------|--------------------------------
    | B12 | ASIC pin 24 | YS (32X)
    |------|--------------------|---------------|--------------------------------
    | B13 | ASIC pin 25 | Vertical sync (32X)
    |------|--------------------|---------------|--------------------------------
    | B14 | ASIC pin 26 | Horizontal sync (32X)
    |------|--------------------|---------------|--------------------------------
    | B15 | ASIC pin 152 | EDCLK (32X)
    |------|--------------------|---------------|--------------------------------
    | B19 | ASIC pin 151 | CLK (Game Genie/Virtua Racing/32X)
    |------|--------------------|---------------|--------------------------------
    | B21 | ASIC pin 158 | CAS (32X)
    |------|--------------------|---------------|--------------------------------
    | B26 | Connected | !CE_H (Virtua Racing/32X)
    |------|--------------------|---------------|--------------------------------
    | B30 | ASIC pin 43 | !S_RES (MD/G<->SMS mode)
    |------|--------------------|---------------|--------------------------------
    | B32 | ASIC pin 42 | !CART_IN (Sega CD connector)

    here the after pics pics








    looks good

    thanks james
    IF IT DONT FIT, DON'T FORCE IT, MOD IT
    anythink is posable with AMIGA

  2. #2
    Retro Girl Staff Moderator SkydivinGirl's Avatar
    Join Date
    Dec 2008
    Country
    USA
    Region:
    Raleigh, NC
    Age
    43
    Posts
    7,159
    Feedback
    149 (100%)

    Default

    Good job, James! I love hardware pr0n.

    Heather
    Promoted to Level II Solder Tech and Hackery Padawan

  3. #3
    The A600 Pimp! VIP Zetr0's Avatar
    Join Date
    Nov 2007
    Country
    UK
    Region:
    Norfolk
    Age
    42
    Posts
    11,047
    Feedback
    135 (100%)

    Default

    Good to see you back in fine hackery fashion my friend!

    and what better to hack than the humble megadrive!

    right - so how about we add the expansion port next ?! =D

    Flux Mastah' Zee
    50 L337 1'M W1R3FR4M3

  4. #4
    Amibayer! jimbob005's Avatar
    Join Date
    May 2008
    Country
    swadlincote,uk
    Region:
    swadlincote
    Age
    36
    Posts
    461
    Feedback
    10 (92%)

    Default

    Quote Originally Posted by Zetr0 View Post

    right - so how about we add the expansion port next ?! =D

    the expansion port will be bigger than the system


    thanks james
    IF IT DONT FIT, DON'T FORCE IT, MOD IT
    anythink is posable with AMIGA

  5. #5
    The A600 Pimp! VIP Zetr0's Avatar
    Join Date
    Nov 2007
    Country
    UK
    Region:
    Norfolk
    Age
    42
    Posts
    11,047
    Feedback
    135 (100%)

    Default

    Quote Originally Posted by jimbob005 View Post
    Quote Originally Posted by Zetr0 View Post

    right - so how about we add the expansion port next ?! =D

    the expansion port will be bigger than the system ....

    thats never stoped you before =D
    Flux Mastah' Zee
    50 L337 1'M W1R3FR4M3

Similar Threads

  1. Closed Sega GENESIS (US)
    By Seaside in forum Sales Archive
    Replies: 1
    Last Post: 5th February 2011, 21:44
  2. Closed sega genesis 3
    By jimbob005 in forum Found Archive
    Replies: 1
    Last Post: 3rd August 2010, 20:38
  3. Replies: 4
    Last Post: 3rd August 2010, 07:22
  4. Closed SOLD: TOTOTEK megadrive/genesis MD64 Pro flash cartridge
    By keropi in forum Sales Archive
    Replies: 3
    Last Post: 4th October 2009, 23:59

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
  •