Discovery: SFX2+ DEV SYSTEM with Super FX 2

we could have a phone chat with those guys at BLACKWATER

 

Very nice find! Congrats!

GAMEFAN

 

Hi,
i find this thread when i searching for more infos about the SFX Dev System.


i buy this on ebay last Time. I think is the first Rev of the SFX ? Anyone more Infos about it? Thanks!

 

damn too small pic... can you take a bigger one?

 

Sure, but it take some days. Its the Pic from the Seller. Soon as it arrive i make better Pics from it.
I find this interface on Shiggsys site too.
PC I/O for SFX Development stands on it.

 

Unless you ever decide to sell it or die and your family sells it.

 

no. don't do that. so much would be lost...

 

I hope you do remember that post you made a few years back concerning saving it all up for your grand-children Kevin

 

Here some better Pics from PC I/O SFX Board

 

Can you confirm the chips?

All that's really clear is that it's an 8-bit card.

IC1 - 684 - ISA decoding w/ hexadecimal switches
IC2 - 132 - probably also address decoding
IC3 - ?
IC4 - 125 - probably data input
IC5 - 74 - probably control output
IC6 - 374 - probably data output
IC7 - ?
IC8 - ?
IC9 - 125?

 

is that one an eide connector?

 

That Is SO Freakin Awesome

 

Sure, np

IC1 - SN74LS684N
IC2 - SN74LS138N
IC3 - SN74LS32N
IC4 - SN74LS125AN
IC5 - SN74LS74AN
IC6 - T74S37481 99205N ?
IC7 - SN74HC541N
IC8 - SN74HC541N
IC9 - SN74LS125AN

 

Hmm, I thought it was half of an "EPROM emulator" (in-circuit programmable SRAM) as to be expected, with the rest on the cart, but without seeing the cartridge or tracing out the circuit, not certain. Now I'm not so sure since it only uses 10 ISA address bits, some of which must be used for decoding... There aren't enough register bits to page a full MB of memory now... With the 10-register bits and 10 address bits it would be if control was address decoded (PC address output/SNES data isolation vs SNES address output/PC data isolation). It's VERY unlikely this is just for software communication with a SNES, maybe another register is on the cart.. Very convoluted design!

 

Assembler, do you feel that you have might have worked up the courage to pry it off now? ;-) I am sure we would all love to see some closer picture of both sides of the mini snes and mainboard if its not too much trouble :icon_bigg

 

That's a really cool find - incidentally, that 3x3 inch PCB is a "Super Nintendo Gateway System" - they were used in the seatback units in aircraft inflight entertainment systems so the passengers could play SNES games. It's also got RAM for loading the cart image into (but only about 16 megabits, IIRC). I have a box of them somewhere that I grabbed with the intention of making a SNES devbox, but I never get round to doing anything with them.

 

I've never heard of that before, sounds kinda similiar to the Sega Megajet... Any chance you could upload some pictures of that?