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I build a low-cost eprom burner last week, in order to change revisions of my mortal kombat 2 cabinet .. I then re-wired OE and CE because these are the only 2 pins that differ from a 27c040 which i originally needed to burn for mk2 .. So , by inversing both CE and OE i read AFter burner like a charm, checked it with sms checker which labels it good , and played it in meka .. This eprom burner costed me about 6-7$ worth of commonly found parts .. and can be used to read any ROM that is maximum 512k.

The original site :
http://www.zws.com/products/epromr2/epromr_stage1.html

An updated version :
http://salfter.dyndns.org/epromr.shtml

If you build this , i suggest you follow schematics on the updated version , which puts +5v on the pulldown resistor of the data lines , instead of ground, which is the only way i got it to work .. With logic you can read any 512k or below chips , and with coding skills .. you can always update the software , and add support for up to 4megs ROMs, that's without adding another counter for 12 extra address lines .... very simple logic .. very simple software..

Author	Message
Davester Guest	Reading sms roms with eprom burner instead of smsreader / smsarch Posted: Wed Jan 16, 2002 3:28 am
Davester Guest	I build a low-cost eprom burner last week, in order to change revisions of my mortal kombat 2 cabinet .. I then re-wired OE and CE because these are the only 2 pins that differ from a 27c040 which i originally needed to burn for mk2 .. So , by inversing both CE and OE i read AFter burner like a charm, checked it with sms checker which labels it good , and played it in meka .. This eprom burner costed me about 6-7$ worth of commonly found parts .. and can be used to read any ROM that is maximum 512k. The original site : http://www.zws.com/products/epromr2/epromr_stage1.html An updated version : http://salfter.dyndns.org/epromr.shtml If you build this , i suggest you follow schematics on the updated version , which puts +5v on the pulldown resistor of the data lines , instead of ground, which is the only way i got it to work .. With logic you can read any 512k or below chips , and with coding skills .. you can always update the software , and add support for up to 4megs ROMs, that's without adding another counter for 12 extra address lines .... very simple logic .. very simple software..

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