Jumpers, Switches – Gasboy CFN III Quick Reference Guide v3.3 User Manual
Page 24

CFN III Quick Reference
Page 20
MDE-4483 CFN III Quick Reference Guide v3.3 · August 2005
Jumpers
SC-Comm CPU Board settings
Jumper
Description
Setting
K3
AC power fail sense
2-3 to enable
1-2-3 to disable*
K4
AC watch dog timer
1-2 to enable*
K5
SC-Comm CPU (testing
only)
1-2 to reset
K6
RS-485 loop 1, 2 wire to 4
wire
2-3 for 4 wire*
1-2 for 2 wire
K7
RS-485 loop 2, 2 wire to 4
wire
2-3 for 4 wire
1-2 for 2 wire*
K8
Rx Clock from synchronous
modem (DB-25-15)
1-2 to connect
K9
ETC output to synchronous
modem (DB-25-24)
1-2 to connect
K10
Tx clock input from
synchronous modem (DB-
25-17)
1-2 to connect
K11
EPROM type
2-3 for 27256 or
27128
K12
EPROM type
2-3 for 27256 or
27128
* = default setting
CFN3 Memory Board
Assembly part number: C05839.
Switches
DIP Switch SC-Memory I/O-S1
Position & Definition
Setting
1
Boot to monitor after reset
Boot to OS after reset
open
closed
2
Debug mode
Normal
open
closed
3
Don’t talk to PC while in
monitor
Monitor I/O goes to PC also
open
closed
4
Monitor I/O goes to SC port 1
also
No monitor I/O to SC port 1
open
closed
Dip Switch SC -Memory I/O-S2
Position & Definition
Setting
1
Battery 1
open=disabled
closed=enabled*
2
Battery 2 - External
open=disabled*
closed=enabled
3
N/A
unused
4
N/A
unused
Jumpers
SC-Comm Memory I/O board settings
Jumper
Description
Setting
K1
Date/Time Clock Speed
*1-2 for 4 wait
state
2-3 for 1 wait
state
K2
Enable A19 to RAM
*2-3 for 128Kx8
1-2 for 512Kx8
K3
RAM size
*2-3 for 128Kx8
1-2 for 512Kx8
K4
External Battery
no connector =
disabled
K5
Tokheim Reset Output
Channel 2
Do not install; not
supported
1-2 for reset
* = default
CFN3 Memory Map
00000
-
RAM
FFFFF
00000
DUAL RAM
00000
EEPROM
00000
SCC0
00800
SCC1
01700
SCC2
10000
SCSI
10100
LEDs
10200
CPU Board Switches
20000
Real Time Clock
20100
Memory Board
Switches
20300
Battery Status
20500
Watchdog Reset
20700
Battery Drain Control
00900
-
EPROM
Fffff