5 Feb
2007
5 Feb
'07
8:45 a.m.
On 4 Feb 2007 at 19:36, Richard Lynch wrote:
There are several numbers on the center board:
5080-9740
5060-8380
A-3516-22
809L
Here's a photo of its ROMs:
The ROM part numbers and the board number (5060-8380) show that the board
is a "Fast FORTRAN Processor II" microcode set. This contains the FFP
instructions plus the dynamic mapping instructions (DMI) that work with
your MEM board in the front card cage.
If that's the only microcode board under your CPU, then you're missing the
base instruction set board, which must be present to use the machine. The
machine should power up, but the front panel won't work, as that's
controlled by microcode on the base set board.
This board appears on page VI E-4 of the HP 1000 Engineering and Reference
Document, available here:
http://www.bitsavers.org/pdf/hp/1000/1000_MEF_EngrRef/
The three ROMs all have 12992 on them, the first in
light pencil (not
visible in the picture below)...
Is it 12992-something? The "something" will indicate what ROM it is.
...the others with a label as shown here:
http://home.comcast.net/~richardlynch3/hp/opt_roms.jpg
From the photo, the installed ROMs are:
- U36 (ROM #0) 1816-0420 is the 12992K paper tape loader
- U16 (ROM #1) is unknown
- U15 (ROM #2) 12992-80009 is the 12992C 264x CRT tape cartridge loader
- U13 (ROM #3) is the same as #2
U16 does not appear to have an HP part number on it, although your first
message said that it was a disc boot loader. The HP part number might be
on the underside; you might wish to remove it from the socket to check. Or
the fact that the "chip label" is in pencil might indicate that it's a copy
of the HP chip that was made by the owner. Or it might be a custom disc
boot loader.
U15 and U13 are designed to boot from the DC-100 minicartridge tapes that
are present in (most) HP 264x-series terminals, e.g., the 2644, 2645, 2647,
or 2648. A 12966A or 12968A interface card must be used with these
terminals when using the 12992C boot loader ROM.
Why are U13 and U15 both labeled "80009"?
Are they the same chip or is
that a date code?
Same chip.
Section 7 of the "HP 1000 MEF CE Handbook" has tables of board/chip part
numbers and associated descriptions that will help to identify these sorts
of things:
http://www.bitsavers.org/pdf/hp/1000/5950-3767_M-E-F_CEhbk_Jul84.pdf
I'm not sure if the paper tape loader ROM is
present. U12 is empty - is
this where it was supposed to go:
http://home.comcast.net/~richardlynch3/hp/u12.jpg
It's U36, visible in your "opt_roms.jpg" image; see page 13-8 of the CE
Handbook above for a locator diagram.
One more photo of the numbers on the CPU board:
http://home.comcast.net/~richardlynch3/hp/cpu_nums.jpg
The board number, 5060-8352, indicates that it is an M-series CPU with date
code 1838 (38th week of 1978).
-- Dave
