California Computer Systems -
2422 FDC Board
This was a fairly standard FDC board.
The only thing unusual was that by modifying the board you could get it to work
with PerSci drives. It utilized the Western Digital 1793 (non inverted data bus
1791) FDC chip.
CCS's 2422 Floppy
Disk Controller supported single- and double-density data formats, single- and
double-sided 5.25" and 8"
drives,
and provided a 2K ROM containing software debugging routines and a bootstrap
loader for loading CP/M (Digital Research's single-user operating system) from
diskette. The 2422 was designed especially for use in CCS's system 2210, but
provided a number of user options for compatibility
with
other
systems
and
software.
The
2422
incorporated
the
following
features:
-
Ability
to
control
up to
four drives
in
any combination of single-sided or
double-sided
5.25"
and
8"
drives.
-
Compatibility
with
the
IBM
3740
and
System
34
standards
for single-
and
double-density
diskette
formats.
-
ROM-resident
monitor
program
and
bootstrap loader.
-
Auto
Boot
option
allowing
CP/M
to
be
booted
in
on
reset.
-
Compatibility
with either
Shugart
or
Persci
drive buses
-
Compatibility
with
IEEE
proposed
S-100
bus
-
A
compatible version of CP/M that supports single- and double-density diskette
formats in 128, 256, 512, and 1024 bytes
per
sector.
The well written manual can be obtained
here.
Other California Computer
Systems S-100 Boards
16K RAM
2065 64K RAM
2066 64K RAM
FDC
Z80 CPU
SIO
Serial & Parallel
Other Boards
This page was last modified
on
01/08/2011