COMTROL CORPORATION
HOSTESS CLUSTER
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Category |
Serial controller |
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Chipset Controller |
NEC |
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I /O Options Supported |
Serial ports (16) |
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Maximum Onboard Memory |
2MB |
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CONNECTIONS |
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Purpose |
Location |
Purpose |
Location |
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100-pin serial interface connector |
CN1 |
8-port upgrade card connector |
CN3 |
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8-port upgrade card connector |
CN2 |
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RS-232/RS-422 SELECT - JP1-JP8 |
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Setting |
Jumper A |
Jumper B |
Jumper C |
Jumper D |
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RS-232 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
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RS-422 |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
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Note:JP1-JP8 correspond to serial ports 1 - 8, respectively. Jumper D does not exist on JP5-JP8. |
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PORT 1 FULL/HALF DUPLEX SELECT |
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Setting |
FD1 |
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Half-duplex mode |
Pins 1 & 2 closed |
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Full-duplex mode (DMA1) |
Pins 2 & 3 closed |
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PORT 2 FULL/HALF DUPLEX SELECT |
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Setting |
FD2 |
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Half-duplex mode |
Pins 1 & 2 closed |
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Full-duplex mode (DMA2) |
Pins 2 & 3 closed |
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PORTS 1 & 2 RS-232 SYNCHRONOUS/ASYNCHRONOUS SELECT - JP9 |
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Setting |
Jumper A - Jumper E |
Jumper F - Jumper M |
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Asynchronous |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
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Synchronous |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
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PORT 1 DATA TERMINAL READY (DTR) OPTIONS |
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Setting |
JP14 |
JP15 |
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Normal RS-232 |
Closed |
Open |
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Synchronous RS-232 |
Open |
Closed |
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PORT 2 DATA TERMINAL READY (DTR) OPTIONS |
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Setting |
JP16 |
JP17 |
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Normal RS-232 |
Closed |
Open |
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Synchronous RS-232 |
Open |
Closed |
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I/O ADDRESS |
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Setting |
SW1/1 |
SW1/2 |
SW1/3 |
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218h |
Off |
Off |
Off |
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21Ch |
On |
Off |
Off |
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238h |
Off |
On |
Off |
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23Ch |
On |
On |
Off |
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DRAM CONFIGURATION |
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Memory Size |
Bank 0 |
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128KB |
(2) 64K x 9 |
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2MB |
(2) 1M x 9 |