Thanks, if this is for use with an IBM 5155/5160, there could be special considerations for the F000h segment. The BIOS chips on the board are connected to the bus served by ISA slot 8, so it is likely that this segment can only be provided by hardware in that slot. However slot 8 cannot be used for...

For some reason, the 1000 RL requires the ROM image to be not at c800h. Fortunately it is enough to simply move the BIOS image along a bit in the chip, rather than changing the hardware - there is a pre-configured option now available with the BIOS at CC00h, which should work OK: http://www.lo-tech....

Hi, is there some problem with my 1MB memory board design that I can help with?

I have a universal ROM board kit exactly for this type of use-case :)

http://www.lo-tech.co.uk/product/isa-rom-board-kit/

Re use of SD cards; I found quite by accident that *certain* IDE to SD Card adapters are actually based on a CompactFlash to SD Card bridge chip, and therefore support the required 8-bit transfer mode: http://www.lo-tech.co.uk/isa-compactflash-adapter-and-sd-cards/ The bridge chip is FC1306T (GP). H...

der Controller arbeitet super... an einem Pentium 90 (wo ich ihn allerdings nach ~10 Flashvorgängen nicht mehr neu Brennen kann - an meinem 386er gehts aber o.O)... im XT hingegen lädt er sein kleines Bootmenu, erkennt die Karte und bleibt mit einem "Booting C>>C" stehen. Most likely the ...

Hi All,

After selling out yet again in May, I now have a few more ISA CompactFlash board kits available - see here.

Enjoy!

Hi All, I now have some kits available for the lo-tech ISA CompactFlash board: available here.

Cheers!

As said, a ROM board with the XTIDE Universal BIOS should work (if it's an IDE controller that is in question?). Here is my ROM board design: http://www.lo-tech.co.uk/wiki/Lo-tech_8-bit_ROM_Board You need to have ROM shadowing enabled though, otherwise the BIOS code will execute very slowly being fe...

Hi, there are many factors affecting throughput, but in a stock IBM PC 5150 or 5160, with 4.77MHz CPU, and a single-sector capable (standard) CompactFlash card, it should deliver about 160KB/s. Using a multi-sector capable CompactFlash card, like SanDisk Utlra II, and 16-bit BIU mode, this rises to ...

Hi All I've got more PCB stock in and (IMO) an improved shop page: http://www.lo-tech.co.uk/shop/ I also decided to run another batch of XT-CF-lite PCBs , since there has been steady requests for them on email, and for the first time am making the custom ISA slot brackets available as well. Enjoy :)

I guess this works by using SET MAX ADDRESS (see Host Protected Area), so it may be possible to set this on other drives using hdparm under Linux.

I'm not sure if it has been written already, but not all CompactFlash cards will work as slave devices. Master/Slave adapters are readily available on eBay of course, but you'll just need to try a few to find one that works as a slave device. Also some CompactFlash cards can't be on the same channel...

Just to add, though the ROM base address is fixed, there is a lot of free space available. So it is possible to use it with an MFM controller that also has C800 fixed base address, provided the IO ports do not overlap, by storing both the MFM and XTIDE BIOS images on the lo-tech adatper: 1. Extract ...

Hi, I've read this thread via Google Translate - hopefully I have the right idea :) To clarify how everything fits together, the Lo-tech ISA CompactFlash Adapter consists of three parts (by the way, I am the designer): 1. An IO port adapter enabling communication to ATA-2 and CompactFlash devices, t...