peterbbu
Experienced Member
I have a Plessey 256KB QBUS memory card 705035 but am lacking any technical information on it.
It is a dual card with 36 x 4864 DRAMs (64 K x 1) so 256 KB plus parity.
There are 2 switches: S1 4pole all on
S2 10 pole 1,6,7,8 off, 2-5 & 9-10 on
Is this a Q18 or Q22 card?
Thanks
Peter
It is a dual card with 36 x 4864 DRAMs (64 K x 1) so 256 KB plus parity.
There are 2 switches: S1 4pole all on
S2 10 pole 1,6,7,8 off, 2-5 & 9-10 on
Is this a Q18 or Q22 card?
Thanks
Peter