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HP 1 ~52~~ 0

PROCESSOR MODULE
Manual Part No. 13220-91088
REVISED
AUG-1.4-B1

DATA TERMINAL
TECHNICAL INFORMATION

HEWLETT~PACKARD

Printed in U.S.A.
13220 13220-91088/02
Processor Module REV AUG-14-81

1.0 INTRODUCTION

The 02620-60088 Processor PCA perforMs the terMinal logic functions for
the 2623A terMinal. Its operation is based on the Z80A Microprocessor,
National SeMiconductor 8367 CRT Controller (eRTC), and a proM based
Microsequenced graphics controller.

The control and I/O section of the Processor peA provides control
signals, input/output and data processing functions. The MeMory
section provides 16K bytes of dynaMic RAM for character display MeMory,
scratch pad MeMory, data buffers and space for up to six 4K or 8K byte
ROMs of which 40K are used for cOMplete terMinal operation (4K of ROM
optional with integral printer). The Graphics MeMory subsysteM
contains 16K words (16K X 16) of vector display MeMory. The Graphics
subsysteM is responsible for both write and display refresh of the
graphics MeMory. The video control section provides tiMing signals for
driving the sweep circuitry and video logic as well as perforMing
direct MeMory access (DMA) of display data. A detailed description of
the operation of each of these sections follows in section 3.0.
2.0 OPERATING PARAMETERS.

A sUMMary of operating paraMeters for the Processor Module is contained
in tables 1.0 through 4.0

Table 1.0 Physical ParaMeters

Part Size (L x W x D) Weight
1 NUMber 1 NOMenclature 1 +/-0.1 Inches 1 (Pounds) 1
1=================1======================1==========================1==========1
1 1 1 ' I
1 1 1 1 1
I 02620-60088 , Processor peA I 12.3 x 10.9 x O.S I 1.4 I
I I I 1 1
1 1 1 1 I
I 1 I 1 1
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PROCESSOR MODULE
Manual Part No. 13220-91088
REVISED
AUG