The Memory Address Registers

base +2316 to base +2716

The memory address registers are read only registers that return the address where the last reading in the set will be stored. These registers are useful for determining if the digitizer has been re-initiated by indicating the number of readings that have been taken. For example, if 100 readings are to be taken when the digitizer is re-initiated, the memory address registers point to the location where the 100th reading is to be stored.

Address

7

6

5

4

3

2

 

1

 

0

 

 

 

 

 

 

 

 

 

 

 

base + 2316

128

64

32

16

8

4

 

2

 

1

 

 

 

 

 

 

 

 

 

 

 

Purpose

Wrapped

Memory

Address

Local

Reserved

 

current address

 

 

 

Size

Valid

Interrupt

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Setting

0 - no

0 - 128K

0 - no

 

 

 

A18 - A16

 

 

1 - yes

1 - 512K

1 - yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address

7

6

5

4

3

2

 

1

 

0

 

 

 

 

 

 

 

 

 

 

base + 2516

 

Memory address register 1: current address A15 - A08

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address

7

6

5

4

3

2

 

1

 

0

 

 

 

 

 

 

 

 

 

 

base + 2716

 

Memory address register 2: current address A07 - A00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit Descriptions Wrapped. Bit 7 indicates if the data memory address counter has wrapped around.

Memory Size. Bit 6 indicates the number of 2-channel readings digitizer memory can hold. For all digitizers this is 512K.

366 Register Programming

Appendix C

Page 366
Image 366
HP E1429A manual Memory Address Registers, Base +2316 to base +2716