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  • Joined: 28 Sep 1999
  • Posts: 1138
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Sega System E
Post Posted: Thu May 27, 2010 12:49 am
I have written some documentation for the SMS-derived Sega System E arcade board:

http://cgfm2.emuviews.com/txt/setech.txt

For SMS developers what makes this system fun is: 5.36 MHz Z80, memory mapped VRAM (write-only), two VDPs with 32K of VRAM each (banked).

There seem to be no good games for this system other than Fantasy Zone 2. :)
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  • Joined: 21 May 2007
  • Posts: 136
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Post Posted: Sun Sep 17, 2017 10:21 pm
really great document !
starting to read it, i'm trying to add support of system e on sega saturn using, charlesm super fast sms video emulation for saturn !
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  • Joined: 21 May 2007
  • Posts: 136
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Post Posted: Sat Sep 23, 2017 8:17 pm
i'm stucked on displaying sprites, think sprites of vdp1 are displayed but not sprites of vdp2, could someone help ?

during set register i do that :

case 0x05: /* Sprite Attribute Table Base Address */
if(segae_vdp_vrambank[chip])
satb[chip] = ((segae_vdp_regs[chip][regnumber] << 7) + (segae_vdp_vrambank[chip] * 0x4000)) & 0x7F00;
else
satb[chip] = (segae_vdp_regs[chip][regnumber] << 7) & 0x3F00;



bikes are not displayed, i get only trees, some road signs and puddles on road.
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