Fusion converter



Warning ! This page contains a build log, and therefor schematics and layouts which aren't tested or which contain errors. DO NOT attempt to build anything described here.

The Open Hardware MVS converter (still looking for a name) will be a low-cost, highly compatible MVS to AES adapter currently in development.

Build log
Both boards sent to fab --Furrtek 23:43, 6 August 2012 (CEST)

Boards received, will start tests the 9th --Furrtek 01:22, 4 September 2012 (CEST)

According to documentation, MAX II isn't 5v tolerant. --Hpman 15:40, 5 September 2012 (CEST)

True, will do basic durability tests. If they fail, I'll add level translators as suggested. --Furrtek 02:28, 7 September 2012 (CEST)

Errors on first prototype:
 * 4MB/ROMOE swapped because of part-footprint link wasn't updated.
 * 245s in the wrong direction (AB/BA), added an ALS04 inverter on direction pins to fix.
 * Misunderstood the AND logic for the 245 /OEs, fixed with cuts and patches.
 * Missing connections for LOAD, H and EVEN to the CPLD, added jumper wires to pins 48, 49 and 50 respectively.
 * Zoom problems, will try adding the RC delay on EVEN.

Puzzled works, KOF95 seems to work with some bad colors (maybe bad palette ram), Metal Slug 2 resets at the title screen.

--Furrtek 04:21, 10 September 2012 (CEST)

MS2 plays first level at least. Sent proto to Anzymus for further testing. Commited the fixes to the schematics and layouts. --Furrtek 06:17, 13 September 2012 (CEST)

Getting proto back from Anzymus, will borrow MSX and KOF98 and investigate. --Furrtek 08:10, 24 September 2012 (CEST)

Compatibility list
=Parts list=


 * MVS connectors http://www.digikey.com/product-detail/en/ECC60DJBN/S7280-ND/1196520
 * PCBs from PCBCART
 * EPM240T100C5N http://fr.farnell.com/altera/epm240t100c5n/max-ii-isp-cpld-240-tqfp100-240/dp/1453503
 * 1117 3.3V LDO http://fr.farnell.com/diodes-inc/ap1117e33g-13/regulateur-ldo-3-3v-sot223/dp/1825291
 * 74HCT245 http://fr.farnell.com/texas-instruments/sn74hct245dw/emetteur-recepteur-de-bus-octal/dp/9591923
 * 74HCT08 http://fr.farnell.com/texas-instruments/sn74hct08d/ic-quad-gate-2i-p-soic-14/dp/2136927

=Circuit boards=

DO NOT BUILD.