3034

3034 is a 256 K memory module.

Introduction
256 K word (512 Kbyte) memory for a ND-100 machine.

Switches and indicators
From top of the card Sets the memory address range of the card, these are in octal. and so on.
 * upper limit display
 * TH1 -
 * TH2 -
 * TH3 -
 * TH3:0, TH2:0, TH1:0-3 - upper limit display: 020 - memory address range: 0 - 256 K
 * TH3:0, TH2:0, TH1:4-7 - upper limit display: 024 - memory address range: 64 - 320 K
 * TH3:0, TH2:0, TH1:0-3 - upper limit display: 030 - memory address range: 128 - 384 K
 * TH3:0, TH2:0, TH1:0-3 - upper limit display: 034 - memory address range: 192 - 448 K
 * TH3:0, TH2:0, TH1:0-3 - upper limit display: 040 - memory address range: 256 - 512 K
 * TH3:0, TH2:0, TH1:0-3 - upper limit display: 044 - memory address range: 320 - 576 K
 * TH3:0, TH2:0, TH1:0-3 - upper limit display: 050 - memory address range: 384 - 640 K
 * T6 - yellow LED - 192-256 KW access indicator
 * T5 - yellow LED - 128-192 KW access indicator
 * T4 - yellow LED - 64-128 KW access indicator
 * T3 - yellow LED -  0-64  KW access indicator
 * T2 - red LED - error detected indicator
 * T1 - red LED - error correction disabled indicator
 * ENABLE / DISABLE switch
 * 0 - disabled - disables the error correction indicator (T1) and clears the error detected indicator (T2).
 * 1 - enabled - enables the error detected indicator (T2).

Connectors
The A and B connectors are used for I/O, the C connector is used for the ND-100 Bus.

I/O Devices on the card
none?

ND sales number

 * ND-116 - 256 Kbyte
 * ND-117 - 512 Kbyte