sra@idx.com (05/23/91)
Can anyone tell me the function of the "UNIX" jumper on my Intel 302
Motherboard? My 302 book tells me nothing and the local Intel office is next
to useless. I will also state that the ISA bus on this machine is very slow.
I've run VIDSPEED with an STB powergraph board and the thruput is terrible.
Even my old 8 Mhz Sperry AT has an I/O bus that is 250% faster than this
25 Mhz/cache machine!
steve
/------------------------------------------------------------------------\
> Steve Alpert (W1GGN) IDX Corporation Marlborough, Massachusetts <
\--------------------------- sra @ idx.com ------------------------------/johnl@iecc.cambridge.ma.us (John R. Levine) (05/25/91)
In article <1991May23.083345.2273@idx.com> you write: >Can anyone tell me the function of the "UNIX" jumper on my Intel 302 >Motherboard? It's documented perfectly well in the motherboard manual, if not in the 302 manual. When the jumper is not in the unix position, the ROM BIOS is mapped both in the bottom 1MB and at the top of the 16MB address space. When it is in the unix position, the BIOS is only mapped in the bottom 1MB. The non-unix position might be useful to some versions of OS/2, maybe, but in most cases it makes no difference. I acually loaded up my 302 with 16MB of RAM but I wasn't able to use the very top chunk of memory, no matter which position the jumper was in. Regards, John Levine, johnl@iecc.cambridge.ma.us, {spdcc|ima|world}!iecc!johnl