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mark_k · 15 February 2013, 22:02

Apart from the Cirrus chips, another possible candidate for emulation might be a card which uses a Tseng Labs ET4000(/W32) chip. Chip docs are available and I think Dosbox can emulate it.

Tseng Labs ET4000/W32i Graphics Accelerator Data Book (295 pages)
Tseng Labs ET4000/W32p Graphics Accelerator Data Book (279 pages)
ET4000 application notes/schematics (61 pages)
The ET4000 seems to be an earlier chip than the ET4000/W32(i). I'm not sure how it relates to the ET4000/AX.

The ArMax oMniBus uses an ET4000/AX, 1MB RAM. It's actually an ISA card with a board that converts it to the Zorro bus.
The Xpert Services/Village Tronic Domino is another ISA card with adaptor board. Zorro II, uses ET4000. 1MB RAM.
The Xpert Services Merlin uses the ET4000/W32 chip. 2MB or 4MB RAM. Zorro II/III card. According to amiga.resource.cx only 2MB is possible in Zorro II mode. Has Picasso96, EGS and ProBench AmigaOS RTG drivers. Works with NetBSD/OpenBSD and apparently with the third-party Amix driver. I have a Merlin card.

15 February 2013, 22:02	#16
mark_k Registered User Join Date: Aug 2004 Location: Posts: 3,343	Apart from the Cirrus chips, another possible candidate for emulation might be a card which uses a Tseng Labs ET4000(/W32) chip. Chip docs are available and I think Dosbox can emulate it. Tseng Labs ET4000/W32i Graphics Accelerator Data Book (295 pages) Tseng Labs ET4000/W32p Graphics Accelerator Data Book (279 pages) ET4000 application notes/schematics (61 pages) The ET4000 seems to be an earlier chip than the ET4000/W32(i). I'm not sure how it relates to the ET4000/AX. The ArMax oMniBus uses an ET4000/AX, 1MB RAM. It's actually an ISA card with a board that converts it to the Zorro bus. The Xpert Services/Village Tronic Domino is another ISA card with adaptor board. Zorro II, uses ET4000. 1MB RAM. The Xpert Services Merlin uses the ET4000/W32 chip. 2MB or 4MB RAM. Zorro II/III card. According to amiga.resource.cx only 2MB is possible in Zorro II mode. Has Picasso96, EGS and ProBench AmigaOS RTG drivers. Works with NetBSD/OpenBSD and apparently with the third-party Amix driver. I have a Merlin card.