HP Integral PC 82971A EPROM/ROM module - anyone have docs?

[Tony Duell]

> 
> Anyone have docs on the 82971A EPROM/ROM module for the HP Integral PC?

I have such a board. 

I have an uofficial hand-drawn schematic that's available in the usual 
way. I;ve also deduced the function of the DIP switches, and include that 
information below.

HP82971 ROM/EPROM Module (for Integral PC) DIP switch settings
--------------------------------------------------------------

S1 1-4 : Set card address (Off = logic 1)
 1 : A19
 2 : A20
 3 : A21
 4 : A22

S1 5-6 : Select wheter A20 is used to select the card : 
 Exactly 1 of 5,6 must be on
 5 On, 6 Off : A20 not used (S1(2) ignored)
 5 Off, 6 On : A20 used

S1 7-8 : Select wheter A19 is used to select the card : 
 Exactly 1 of 7,8 must be on
 7 On, 8 Off : A19 not used (S1(1) ignored)
 7 Off, 8 On : A19 used

S2 1-2 : Select use of ROM pin 22
 Exactly 1 of 1,2 must be on
 1 on, 2 off : Pin 22 gets A17 (pin is A16)
 1 off, 2 onn : Pin 22 grounded (pin is OE/)

S2 3-5 : Select bit 0 of ROM select decoder
 Exactly 1 of 3,4,5 must be on
 3 : A16
 4 : A17
 5 : A18

S2 6-8 : Select bit 1 of ROM select decoder
 Exactly 1 of 6,7,8 must be on
 6 : A19
 7 : A18
 8 : A17

S3 1-2 : Select use of ROM pin 1
 Exactly one of 1,2 must be on
 1 on, 2 off : Pin 1 gets +5V (pin is Vpp)
 1 off, 2 on : Pin 1 gets A16 (pin is A15)

S3 3-5 : Select pit 2 of ROM select decode
 Exactly 1 of 3,4,5 must be on
 3 : A20
 4 : A19
 6 : A18

S3 6 : Not used

S3 7,8 : Select timing
 Exactly 1 of 7,8 must be on
 7 on, 8 off : DTACK after 300 ns
 7 off, 8 on : DTACK after 200 ms













Sensible combinations
 
         512K Card     1M  Card    2M Card
         ----------------------------------
         32K ROM       64K RPM     128K ROM      
S1 5     Off           Off         On 
S1 6     On            On          Off
S1 7     Off           On          On
S1 8     On            Off         Off
 
S2 1     Off           Off         On
S2 2     On            On          Off
S2 3     On            Off         Off
S2 4     Off           On          Off
S2 5     Off           Off         On
S2 6     Off           Off         On
S2 7     Off           On          Off
S2 8     On            Off         Off

S3 1     On            Off         Off 
S3 2     Off           On          On
S3 3     Off           Off         On
S3 4     Off           On          Off
S3 5     On            Off         Off



> 
> Anyone have one of these that they have in use for some purpose?

Unfortunately the slots in both my Integrals are full of more useful 
PCBs, do this one is sitting on the shelf. 

I beleive there's software on the Australian site to burn files into 
EPROMs which are then plugged into this board. I've not tried it yet.

-tony