some unassembled PCBs for diy projects

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Yulquen74

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UPDATE 02.06.2015:
SPLD code of FASTRAM board has been changed for CDTV and IDE68K compatibility.
Both verified working by one Amibayer.

UPDATE 12.05.2015:
I have a number of SRAM chips for the 12.625MB FastRAM board available (R1WV6416RSA-7SR).
8 euros each (2 is needed) + 3 euro shipping.

SOLD OUT (THE MANUFACTOR ONLY PRODUCES 55ns CHIPS NOW WHICH COSTS MANY TIMES MORE THAN THE 70ns ONES)

0,5MB RAM for A500 / 1MB chip RAM board for A500+
Simple to assemble, hole components only. Parts easy to source,
except perhaps the side connector (bought mine at RS).
Using same RAM chips as found in A500 rev.6/8 boards and A590's.
5 euro each

BACK IN STOCK (10 left)


Guru ROM adapter board built for easy mounting inside A590 (no cutting).
DMAC V2 is REQUIRED.
Can also be mounted inside GVP sidecar units, but some cutting is required.
Simple to assemble, hole components only. Parts easy to source.2 euro each.
Programmed PLD (own code) available for 3 euros each.

SOLD OUT

12.625MB FastRAM board for A500/500+ with accompanying Gary board.
All surface mount, contains TSOP components, very hard to solder.
10 euro a set.

Programmed PLD's (own code) for FastRAM and Gary board available (3 euros each).

Note: Its a compact cpu socket board using SRAM. The board does in
no way compete with prices for Kippers super cheap boards, but it
offers >50% memory as the ONLY advantage. SRAMs are also hard to
solder for the unexperienced, and hard to source.
The 1.7MB RAM starting at 0xC00000 is added automatically by the kickstart,
the rest is added with a few addmem commands, meaning the board
will work fine together with autoconfig sidecars like the A590 if
its internal RAM is disabled. The A590 DMA's fine to this memory.

But if you are happy with 8MB fast mem, get a Kipper board!

STILL AVAILABLE


Picture:

http://i1314.photobucket.com/albums/...ps4bfe46b1.jpg

From left: FastRAM board, 1MB chip board, Gary board, Guru board.

Show and tell thread at EAB:

http://eab.abime.net/showthread.php?t=71223


NOTE:
The boards are sold UNASSEMBLED and WITHOUT parts for DIY people as I have no intention of
assembling lots of boards or sourcing a lot of parts.

Project files necessary to complete the boards are available for buyers or interested buyers
via PM.

Thanks for your interest.
 
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Items received! Great stuff, the guru rom will fit nicely on my GVP G-Force boards! Feedback left.
 
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Really high quality PCB's, still sourcing components for my builds though.

Feedback left, sorry for the delay.
 
Are any 0,5MB RAM for A500 / 1MB chip RAM board for A500+ left?


 
@Yukquen74: I would like to have two Guru PCB if you can explain me what is a DMAC 2... Is it a special IC? Easy to find? can you tell the component list that I have to buy to get it working on my GVP combo 030?
Many thanks,
Jorge
 
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Is it possible to give me a list of parts for the "0,5MB RAM for A500 / 1MB chip RAM board for A500+" to check is I can source the parts 1st?
 
@Yukquen74: I would like to have two Guru PCB if you can explain me what is a DMAC 2... Is it a special IC? Easy to find? can you tell the component list that I have to buy to get it working on my GVP combo 030?
Many thanks,
Jorge

The DMAC is a DMA controller found in CBM hardware, like the A590.
 
Most A590's came with DMAC version 1, while some came with V2.

A2091 boards (the zorro2 variant of the A590) came with DMAC V2 (its labeled 390563-02), its possible to take one from such board.

When changing the DMAC in an A590 to V2, you also have to remove one of the PAL's and insert a wire bridge (on mine I removed U101 and inserted the bridge at JP8),
its even mentioned in the service manual of the A590.


@Yukquen74: I would like to have two Guru PCB if you can explain me what is a DMAC 2... Is it a special IC? Easy to find? can you tell the component list that I have to buy to get it working on my GVP combo 030?
Many thanks,
Jorge

The DMAC is a DMA controller found in CBM hardware, like the A590.
 
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