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MPX-1
Lexicon MPX-1 User Manual
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19
--------------------------
DISCLAIMER
--------------------------
Godbout
Electronics
makes
no
representations
or
warranties
with
respect
to
the
contents
hereof
and
specifically
disclaims
any
implied
warranties
of
merchantability
or
fitness
for
any
particular
purpose.
Further,
Godbout
Electronics
reserves
the
right
to
revise
this
publication
and
to
makes
any
changes
from
time
to
time
in
the
content
hereof
without
obligation
of
Godbout
Electronics
to
notify
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person
of
such
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or
changes.
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This
document
was
proofread
with
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aid
of
SpellGuard
T
M
from
ISA,
Menlo
Park,
CA.
4
2
4
Table of Contents
Table of Contents
2
Warning
4
About MPX-L
4
Technical Overview
4
How to Use the MPX-L
5
MPX-L Block Diagram
5
Local Address Map
6
Accessing Memory on the Bus
6
Accessing I/O Ports on the Bus
7
Getting the MPX-L Attention
7
Getting the Main System Cpu's Attention
7
Interrupt Acknowledge Response on the Bus
8
Hardware Switch Setting and Jumper Options
8
Switch Settings
8
Switch 1 - ATTN Port Address Select
8
Standard ATTN Port Address Selection
8
Swi Tch
8
Interrupt "CALL" Jumpers
9
Selecting and Using 4K or 16K RAM Chips
9
Using 2147 4K X 1 Type RAM Chips
9
Using 2167 16K X 1 Type RAM Chips
10
Configuring the MPX-L for Different Size EPROMS
10
Using a 2716 or 2732 EPROM
10
Using a 2764 EPROM
10
Standard Software Supplied with MPX-L
11
Basic Command Structure and Protocol
11
Opcode Byte
11
Status Indication Byte
12
Link Address Bytes
13
Result 1 and Result 2 Bytes
13
General Notes
13
Command Descriptions
14
NOP - no Operation
14
RESET - Reset the MPX-L
14
SET MASK - Mask or Unmask Interrupt Inputs to MPX-L
14
To Interrupt Controller
15
READREG - Read Interrupt Controller Registers
15
SETRESPONSE - Set Interrupt Response Byte
15
SIZE - Indicate Whether 4K or 16K MPX-L LOADRAM - Load MPX Local RAM from System RAM
16
EXRAM - Execute a Program in Local RAM
16
BLKMOV - Move Block of RAM of System Bus
17
FASTMOV - Move Block of RAM on System Bus - Fast
17
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Lexicon MPX-1 Specifications
General
Brand
Lexicon
Model
MPX-1
Category
Recording Equipment
Language
English
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