denis74 wrote: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.
What programs are you working to use UMB ?
Seems, my board different from yours. SIPP and DIPP slots are connected pin-to-pin (I've checked), since no differences between using either SIPP or DIPP
on my board. My board have 3 jumpers, JP8 enable virtual memory, others jumpers are undefined. I guess, JP9 (IIRC) enable shadow ROM for adaptors;
selecting JP7(IIRC) - my board stopped during POST test.
TLB_220 just doesn't support my chipset (it supported only ACC micro for 286 machine). I've never used UMB as DOS RAM, since it might be produced
more problem than fixed it. I want or EMS driver (if it supported by HW), or driver for virtual disk (or so), like cdisk.sys for JUKO XT. Unfortunately,
currently I do not use "virtual"384KB.