4 May
2008
4 May
'08
3:15 p.m.
On Sun, 2008-05-04 at 21:29 +0100, Tony Duell wrote:
Thanks Tony,
I'm sure Rodney Brown would like to have the register/address mappings
for the HP150.
I have a reference manual for a Microsys STD-BUS HPIB card that uses the
9914. It includes a reference with Z80 source code for all the common
functions. It's trivial to modify the source to "C" and compile for a PC
so, when I get a chance, I'll transpose the source and post it somewhere
for others to reference.
I have several later HP9000's and checked the chips in them. They have a
48 pin chip and are marked 1TL1-0008. A quick google search confirms
that's the "medusa" chip.
HPUX 10.20 for the 9000's has HPIB support built in. Like the 150 you
use ioctl() calls to access the chip. I have done a little HPIB
programming on the 9000 but, was never really comfortable with the
ioctl() methods.
Thanks,
SteveRob
steerex [at] ccvn [dot] com
Talk to me
about the HP150. What HPIB chip does it use? Does your
It's a TMS9914 (I've just checked the TechRef), directly on the 8088 bus.
In general HP's HPIB-capable computers of that vintage used the 9914.
Some peripherals used the Intel 8291, others bit-banged the protocol
using a microcontroller. Later computers used an HP custom chip called
'Medusa' IIRC. Earlier computers either used a microcontroller or
discrete TTL chips.
version of DOS/UNIX have the tools that you need
to do register level
THe HP150, being an 8088 machine, has no hardware protection at all, and
the TechRef gives the addreses for the 9914 registers (and tells you to
look at the data sheet for said chip :-)). There is an MS-DOS device
driver for it, which implelents a subset of the HPIB functions using
ioctl() calls (basically, according to the manual, it only supports
functions where the HP150 initiates the operation).