Made a working stepping stage driver, and then tried the new dumped vj with it. Yes, vj uses the similar hardware -- two 68000 based boards, and a Windows PC as a slave device (contains 3x mpeg1 decorders, at least for stepping stage).
However, in mame's tile viewer, vertical stripes are shown from the two 16-bit 4-MegaByte rom chips (mr98053-03.ic14 and mr98053-04.ic36). Checked using hex editor, all even bytes are filled with 0xff in their front half part. Maybe these 2 rom chips use non-standard pin configuration of address/-cs/-oe lines?
In addition to the dumped GAL and CPLD, there is another GAL chip(IC 57), which hasn't a sticker, close to the 68000 CPU and the already dumped GAL. Dump it may help understand the address decoding.   
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Re: DU: Saturday morning bits (updated)
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Re: DU: Saturday morning bits (updated)
