Sold A3640 cpu board v3.2

[Exilent]

A3640

[TABLE="class: basedata"]
[TR]
[TD]Company
Commodore, USA [/TD]
[TD]Date
1992[/TD]
[TD]Amiga
A3000, A4000
[/TD]
[TD]Interface
CPU slot
[/TD]
[/TR]
[/TABLE]

• processor
• 68LC040 / 68040 @ 25 MHz
• can be upgraded to 50 MHz with the Doubler 4000

• general notes
• no memory option - slow motherboard RAM access
• memory can be added with the X-Calibur memory expansion board
• does not support the 040's burst RAM access (7/7/7/7 clock cycles - 14.3 MB/s memory bandwidth)
• on many A3640's the electrolyt capacitors are mounted in the wrong direction, reducing lifetime - even the PCB print is wrong
• A3640's made by Amiga Technologies have the capacitors in the right direction, but the PCB print is still wrong

• A3000 notes
• only v3.1 or v3.2 versions of the board work in A3000
  • v3.1 works but has problems with certain Zorro cards which use DMA
  • v3.2 works correctly
• with Kickstart 2.04 the card does not work with the combination of Ramsey-04 and static column fast RAM
  • at least bank 0 should be page mode RAM
  • the combination of Ramsey-07 and DMAC-04 works perfectly
• with Kickstart 3.1 there's no such problem

Asking 140 euro + postage

 

[cugar124]

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[cugar124]

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[Exilent]

Money received

 

[cugar124]

email sent due to a small problem still waiting on reply