640KB

> That works great, thank you. No need to press F1 for keyboard errors, clock & time set correctly on boot, and from running a few basic tests, everything seems...

> Recently got one of these funny Book PCs and have been tinkering with various things. After jumping through a few hoops I've been able to build the BIOS in...

> An interesting solution was FlickerFree (https://winworldpc.com/product/flickerfree/10) - altough it does not appear to work with programs that bypass BIOS video routines... This is fascinating - never come across this...

Hi Rodney, Thanks for all of the info. So, to summarize the issues: 1. High density floppy support. Yes, that's correct, HD floppy support just isn't practical to fit into...

> I just did some more testing, and when bypassing config.sys, I can at least load MSD.EXE normally. > So that would indicate that the USE!UMBS driver which is loaded...

Thanks for trying that other rom at least - just trying to eliminate things. I'll take you up on the memory dump if that's no trouble. Possible to do one...

Hi Rodney, Want to try to eliminate a few things so made this build that may shed some additional info: [GLABIOS_0.2.5_VT_RK1.zip](https://github.com/rodneyknaap/atx-turboxt-v3/files/11961083/GLABIOS_0.2.5_VT_RK1.zip) Would you mind trying this one? Also, is it...

And to confirm you are using `CLEARMEM.SYS` before `USE!UMBS.SYS` and same result both ways?

Rodney, I wrote a quick little program that should dump the entire memory address space into a file called `MEMDUMP.BIN`: [MEMDUMP.zip](https://github.com/rodneyknaap/atx-turboxt-v3/files/11962307/MEMDUMP.zip) Would it be possible to send me copies of...

Last thought of the night... are you using the 2.2 version of `USE!UMBS` with all of the fixes from Krille? (The source code version you posted above was for the...