125Intermec EasyCoder 501 – Service Manual Ed. 7
Chapter 17 CPU Board
17.3 Circuits and
Straps, cont.
IC-04 Program GAL 501
The GAL (Generic Array Logic) is a memory-mapped address
decoder that is common for all EasyCoder 501 models.
IC-07 Master Processor
The 32CG16 processor
1
treats incoming data from I/O ports and
translates Intermec Fingerprint instructions into machine state-
ments, which, in their turn, generate the bit pattern that makes up
a printed label. The print image of a label is divided into one or
several fi elds, and a typical task for the processor is to fetch the
bit pattern of each character from the selected character generator.
After a possible manipulation, like magnifi cation or reversion, the
characters are placed in their respective fi elds, which are stored
in memory in such a way that they are correctly positioned and
orientated. The master processor also controls communication via
optional interface boards as well as the buzzer.
IC-20 Real Time Clock Circuit (optional)
The optional real time clock circuit (RTC) contains a clock/
calendar with battery backup. If an RTC is fi tted on IC-20, the time
and date do not have to be set manually each time the printer is
started (see TIME$ and DATE$ in the Intermec Fingerprint v6.14,
Reference Manual).
IC-100 to IC-105 General Information
These sockets can use either EPROMs or Flash Memory pack-
ages. EPROMs must be fi tted in pairs (for example IC-100 stores
the even byte portion, and IC-101 stores the odd byte portion of a
16-bit word). Each pair of EPROMs must have the same size.
• EPROMs should be CMOS type with a max. access time of 120
ns. IC-100 to IC-101 can use EPROMs with an individual size
of 128K (1 Mbit) or 256K (2 Mbit), whereas IC-102 to IC-105
also can use 512K (4 Mbit) EPROMs.
The size of the EPROMs is specifi ed by jumpers on P-100,
P-101, and P-102:
- In case of 128K (1 Mbit) and 256K (2 Mbit) EPROMs, no
jumpers are required, but jumpers fi tted in the left-hand posi-
tion are of no consequence.
- In case of 512K (4 Mbit) EPROMs in any of the sockets, all
three jumpers must be fi tted in the left-hand position.
• Flash Memory packages with an individual size of 512K (4
Mbit) can be fi tted in all six sockets, but requires special fi rm-
ware (presently not available). In this case, jumpers must be
fi tted in the right-hand position of P-100, P-101, and P-102.
Present EPROM Types:
IC-100 & IC-101:
27C010 128K (1 Mbit)
27C020 256K (2 Mbit)
IC-102 – IC-105:
27C010 128K (1 Mbit)
27C020 256K (2 Mbit)
27C040 512K (4 Mbit)
1
/. 32CG16 stands for a 32 bit (inter-
nally), and 16 bit (externally) data pro-
cessor with 24 address lines, AD0 to
AD15 (multiplexed address/data) and
A16 to A23 (addressing), which gives
16MB linear address capability.
To Next Page
Loading...
