Need PC-AT "keyboard BIOS" docs

--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote: The UART is local to the 68000 which sits on the OMNIBUS. Since I have the circuit diagrams and licenses to real Qbus and Unibus and VAXBI peripheral boards based on the 68000, I was thinking of adapting the design to the OMNIBUS. The 68K sits there and does single-cycle databreak and/or programmed I/O to the OMNIBUS, but listens to any IOTs I tell it to. It has a modern disk interface and perhaps a spare serial port. Its primary serial port would have a serial LCD or VFD display for status (and maybe blinkenlights), and accept a keyboard for simple, local monitoring, debugging and configuration. I want to use an available, inexpensive keyboard. Given the design so far, either taking a real 8042 from an old PeeCee or using an LK201 are acceptable keyboard designs. I could just use a dumb terminal (or PeeCee running a terminal package), but I wanted something small and dedicated for doing input to the 68000. I'll have a dedicated display for its output (I have several PD3000 "Pole Displays" - 2x20 VFDs from cash registers/tills) Essentially, I'm envisioning a user-definable I/O peripheral. It behaves like any device you ask it to. I'm trying to decide ATA/IDE vs SCSI and am thinking of both. With IDE, it can use flash cards (I have adapter frames) and inexpensive modern disks. With SCSI, it can use inexpensive modern disks, including removables like SyQuest drives (have more than one). It's a design I've been kicking around in my head for a while. I have a DataSystem 310 desk and -8/a arriving in a few weeks. It's enough to put my brain back in OMNIBUS mode. -ethan __________________________________________________ Do You Yahoo!? Yahoo! Finance - Get real-time stock quotes http://finance.yahoo.com