Hi Fred, On Friday 31 December 2004 22:29, Fred Stevens wrote: > Hello, > > I have a Scanfx with an ISA adapter card. The card is mapped to a > jumper selectable range of addresses (0x220,230,260,270,320,330,360,370) > and IRQ settings(3,4,5,10,11,12). After looking at the card, I > determined that it is similar to a parallel port with the exception that > the data bus is bi-directional. There are only a handful of LSttl chips > (74LS245, 74LS244, 74LS86, 74LS74, 74LS174 and a 16?? pal) and one PAL > on the board so it can't be doing too much. The address range of the > card is four bytes (I think) and they are mirrored in the next four > bytes since address line A2 isn't connected on the card edge. The A0 > and A1 lines are connected, as well as A3 through A9. Nothing above > that along with ~iow and ~ior only being used from the ISA bus. IRQs > 3,4,5,10,11,12 are connected and are jumper selectable. The connector > attached to the cardis a high density 25 pin Dsub style. In the scanner > unit the LSI thatis connected to the interface (normal 25 Dsub on the > scanner side) is a Plustek 92001. I am going to do some more hardware > debugging to see what the card does when I have some time. > > Is this information useful to anyone? The scanner is a paperweight to > me unless I can use it under Linux since I stay away from that other > operating system for intel platforms. Even so, the drivers available > for Win95/98 aren't very good. My dad gave me the unit when he was done > using it under Win98 for that reason. It's rather well made though and > could be useful attached to my print server.
the description is more or less useless, because you need to know how this ASIC works. I think its a predecessor of the 96001 ASIC, which is used in later Plustek parallelport scanner and supported by the plustek_pp backend. As this ASIC if pretty old, I don't have any technical documentation on that. Ciao, Gerhard
