I have such a board, experimented with it a few years ago, was able to figure it out and launched simm and dip collaboration, got a maximum of 8 megabytes. The secret is in the unusual memory of simm modules ) I searched and picked up the debt. And the coprocessor worked iit387 .

Hello! Which bios will fit this board , the chipset FRX46C421A ? https://ibb.co/hd2pgK7

sorry . DEVICE=UMB.SYS b000-b800

I was not able to configure unbherc with more than one operating system ( msdos pcdos drdos of different versions) may need specific video card. BUT !!! with these two boards working well program umb.sys kit URAM . The line in the config : DEVICE=UMB.SYS C000-C800 . But only 32kb and very slow …

Perhaps TLV_V220 will work with a certain jumper setting jp7 jp8 jp9. In my case, jp8 - includes access to UMB .jp7 - the address is selected from e000 - efff or d000-dfff. Jp9 - the use of memory modules 1024kb. Maybe you have other options. Try to use all the memory slots sipp and dip together. …

These conduits can easily be restored.

Yes , the difference is minimal , the fee you pay a year older , a description of her I have , but the appointment of all the jumpers out . On your Board has scratches , look carefully ,perhaps somewhere damage the print path. Try connecting the speaker ,mute jp7 and leave one module in sipp bank0 ( …

thank you ! from this archive installed a driver for ems but so far without success , the only program for this Board is hiram , but found the driver for your Board TLB_V220.ZIP . ACC MICRO is at the beginning . Understand the latest j9 jumper if close to j8 + j9 or j7 + j9 the Board runs with one …

thank you , is the right information . In msdos3.30 Checkit3 shows the entire upper memory to 1 MB free (in addition to video ROM and ROM BIOS ) and In msdos6.22 Checkit3 free only shows e000-efff (jp7 on) or d000-dfff to (jp7off). But - msdos doesn't want to boot into this upper memory , the only …

thanks , I'll try to flash your file and see what happens. So , in our motherboards have a lot in common and perhaps one management program. You have the jumper j7, j8 j9 , j8 is responsible for the inclusion of areas of upper memory and j7 for the location of the use of this site at the top of …

unfortunately this website does not allow you to attach a file with the extension .rom , so I had to change the extension to .exe . download and change back .rom

i386 , copied the BIOS image , but I think that he is not original , could you send your BIOS and photos to your Board better with two parties interested in the date of manufacture of parts of the Board to understand what is the fee older .Address lines ma10 is not connected. I also experimented …

Hi! I've got a motherboard as shown in the attached photo. Contacts 17 and 18 (Address 8 and Address 9) simm 30 pin connect to a programmable logic matrix, the chip u4 on the Board.Most likely Your motherboard can work with 4mb memory .