175
Using Memory Cassettes
Section 3-11
Note
1.
Data can be read and written for a EEPROM Memory Cassette with a Pro-
gramming Device.
2.
Data can be read from a EPROM Memory Cassette with a Programming
Device, but must be written with a PROM Writer. An EPROM chip with
8 Kwords, 16 Kwords, or 32 Kwords can be installed in the Memory Cas-
sette.
3.
The CQM1H-ME16K and CQM1H-ME16R cannot be used in CQM1 PCs.
The following EPROM chips (sold separately) are required for EPROM Mem-
ory Cassettes.
Refer to the
CQM1H Operation Manual
for details on replacing EPROM chips
and changing the Memory Cassette’s EPROM version switch settings.
Contents
The data stored in a Memory Cassette is mainly the CPU Unit’s read-only DM,
PC Setup, and program, as shown in the following table. All of this data is han-
dled as a single unit; the 4 areas cannot be read, written, or compared individ-
ually.
3-11-2 Memory Cassette Capacity and Program Size
The following table shows the largest program that can be stored in each size
Memory Cassette.
A non-fatal error will occur and the transfer will not be executed if an attempt is
made to store a program that is too large for the Memory Cassette or read a
program that is too large for the CPU Unit. Two examples are shown below.
1,2,3...
1.
When a 4-Kword EEPROM Memory Cassette is installed in a CPU Unit
with a 7.2-Kword UM (user program) area, programs up to 3.2 Kwords long
can be written to the Memory Cassette. A non-fatal error will occur if an at-
Flash (see
notes 1 and
2)
CQM1H-ME16K
16 Kwords without clock
CQM1H-ME16R 16 Kwords with clock
EPROM
(see note
2)
CQM1-MP08K
8 Kwords, 16 Kwords, or 32 Kwords without clock
CQM1-MP08R
8 Kwords, 16 Kwords, or 32 Kwords with clock
Memory
Model
Specifications
Model
ROM version
Capacity
Access speed
ROM-ID-B
27128 or equivalent 8 Kwords
150 ns
ROM-JD-B
27256 or equivalent 16 Kwords
150 ns
ROM-KD-B
27512 or equivalent 32 Kwords
150 ns
Information
Contents
DM
area
Read-only area
Read-only DM cannot be written from the program.
The range is DM 6144 to DM 6568. These words
can be used freely.
PC Setup
The PC Setup sets the operating parameters of the
CQM1H and it stored in DM 6600 to DM 6655.
Expansion instruction
assignments
These settings indicate which expansion instruc-
tions have been assigned function codes.
User program
The entire user program
Memory Cassette size
Max. program size
4 Kwords
3.2 Kwords
8 Kwords
7.2 Kwords
16 Kwords
15.2 Kwords
