Board was sold by many companies, you seem to have the Biostar version but there were ones by MSI, Elpina / PCChips, ECS and a whole host of others. I use an unknown revision (JK-042A) in my U5S Super40 setup. Each company used the same board but changed some of the elctronics, mine has a KBC and Voltreg but others exist without them. The RTC chip is only used by boards that don't have the battery and more conventional CMOS installed. I think the KBC depends on the revision of the SuperIO/Chipset, as some may provide it internally.
This board freaks out if the cache is not setup properly and if the RAM is setup wrong in the BIOS, I guess you tried the reset CMOS switch?
Your board is in a restart loop? Mine doesn't restart, if you press the restart switch the screen goes black and nothing happens though this problem went away recently for no reason.
I'll let you in on a secret, I was trying to encroach on the Fastest 486 record with mine, had it stable at ~160-166MHz with ISA at ~20MHz, almost at 300 in Topbench. For a cheap nasty board, it runs well and overclocks to an insane level. As that Vogons bloke never backed up his statements with any benchmarking tool, I have currently claimed the record for myself.
- oddly, mine comes from the trash too, never paid a penny for anything in the machine.
Oh, BTW, unless they fixed the markings on that version, the BUS speed is set wrong, on mine the table is JP4-JP5-JP6 but looking at the board in the same orientation the jumper block is reversed JP6-JP5-JP4. Also, best set the multiplier to 3X (Jumper open on mine - which disables the multiplier) and ignore the CPU-Type selection, set it to standard 486DX/SX for most circumstances, I had problems with ST chips when set to anything else (Even setting to M6/M7 upset it). What CPU are you using? I'd reccomend using one with a 33MHz BUS (If you're running a DX40, it'll be fine at 33MHz for now) as this is most stable and is easy to remember settings for too.
These might be the settings for the board;
http://stason.org/TULARC/pc/motherb...IONAL-CORPORATION-486-MB-93.html#.UqNej6B5EvY
Google the model number, i,e; MB 1433 Stason... Seems a few used this model number.
