Date   : Tue, 31 Dec 1985 11:21:00 EST
From   : "Paul E. Woodie" <Woodie@DOCKMASTER.ARPA>
Subject: Re: Osborne Executive question

There was a recent request for memory-map type information on the
Osborne Executive.  I have not had time to get all the information
requested, but I will provide some of it now and some later, as time
permits.

Bank 0:  The lower part contains system space and the upper part
contains most of bios and bdos.  The top part (4k, I think) is common to
all banks and is the normal way that the banks talk to each other.

Bank 1:  This is the normal user-accessable bank, it contains the cpm 3
base page, the TPA, and the common area in the highest addresses.

0-0ffh:  cpm 3 base page

100h-0f305h:  TPA

0f306h-0f8ffh:  p/o bios,bdos

The address of the warm start bios entry point in the jmp at 0000.

The address of the bdos entry point in the jmp at location 0005.

Banks 2-6:  Empty at present

Bank 7:  Contains video memory

Bank 8:  Start-up ROM, function key definitions,etc
                    in the lowest part of memory.