>Studying the photos the first thing I noticed was that pin 5 of the
>expansionslot, the R/W line, is not connected. Very strange when there is a
>SRAM onboard. Pin 21 of the SRAM is the R/W-input and is connected to the
>DMA-input. The CS- and OE-pin of the SRAM are connected to I/O1. I/O2 goes
>to jumper J5 and through the solderpad to EXROM I believe?
At first glance I thought the board was the cartridge assembly board was the
generic one used for other carts such as International Soccer, etc. It is a
very quite popular choice. Most carts of that type have the back socket U3
empty, but it is clearly labelled (screen printed on the board) as RAM/ROM.
Must admit, I've never notice that the CR/W line was not on the board...
very strange.
Then I took a closer look. You can see the EPROM/EPROM/RAM wording above U3,
but unlike the generic International Soccer cart, it takes 27xxx EPROMs....
very strange. Will have to check the IntSoccer cart again tonight...
Any chance the EPROM connents have been read out?
- Nick
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