12 Feb
2003
12 Feb
'03
8:47 a.m.
"Jason J. Gullickson" <mr(a)jasongullickson.com> wrote:
I recently acquired what I believe to be a Heathkit
H89. It was
assembled a long time ago by my friend's father, contains a single disk
drive and a monochrome terminal.
My ultimate goal would be to get this thing running CPM and a C
compiler, but first I need to figure out if it's working.
I've yet to determine if it has a hard or soft-sectored disk controller,
but I have some general questions since I don't have any documentation.
First, where can I get some documentation? ; )
I have all the original documentation, including the assembly manual and schematics. My
first question is; has Heath/Zenith released H89 docs to P.D.?
Second, when I turn the machine on, all I get is a blinking cursor. If
I depress the "offline" key, I can type characters on the terminal
accompanied by a short beep; if the "offline" key is not depressed, I
get long beeps and nothing on the display. What "should" it do when I
turn it on with no disk in the drive?
IIRC, on power-up, you only have about 4 options as to what keys you can press. Pressing
"B" should respond with "oot" (to boot the machine). I don't
remember what the other options were.
I also remember a space bar tapping ritual, to syncronize the serial comm between the two
boards. Don't remember when that was applicable, though.
I'll be happy to provide more info as I dig it up,
but any introductory
details on this system or references to websites, etc. would be greatly
appreciated.
Jason J. Gullickson
mr(a)jasongullickson.com
--
Bob Mason
2x Amiga 500's, GVP A530 (40mhz 68030/68882, 8meg Fast, SCSI), 1.3/3.1, 2meg Chip,
full ECS chipset, EZ135, 1084S, big harddrives, 2.2xCD
Gateway Performance 500 Piece 'o Crap, 'ME, 384meg, 20Gig & 40Gig, flatbed.
Heathkit H-89A, 64K RAM, hard and soft-sectored floppies, SigmaSoft and Systems 256K RAM
Drive/Print Spooler/Graphics board HDOS 2 & CP/M 2.2.03/2.2.04