HP 8921A Programmer's Manual page 332

Chapter 6, Memory Cards/Mass Storage
Mass Storage Device Overview
On board RAM
RAM Disk
memory, 0, n
n = 0, 1, 2, 3
External Disk Drive
HP - IB I/O
XX = 0 to 30
HP - IB Rear Panel
HP - IB LIF CS80
3 1/2" Drive
9122, 9133/4
9153, 9154
ch5drw1.drw
Figure 19 Internal and External Mass Storage Devices
332
:, 7XX, n
n=0,1
Microprocessor
Remove SRAM card from test set.
On-board ROM
ROM Disk
:Memory, 0, 4
Front Panel Memory
Card Slot
:INTERNAL, 4
ROM or SRAM card