DIAMOND FLOWER, INC.
MU-440
Card Type | Serial controller |
Chipset/Controller | Unidentified UART |
I/O Options | Serial I/O ports (4) |
Maximum DRAM | N/A |
CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Serial port 3 | J1 | Serial port 2 | J3 |
Serial port 4 | J2 | Serial port 1 | J4 |
COMPATIBLE MODE ADDRESS SELECT | ||||||
Port 1 (J4) | Port 2 (J3) | Port 3 (J1) | Port 4 (J2) | SW1/1 | SW1/2 | SW1/3 |
3F8h | 2F8h | 3E0h | 3E8h | Off | Off | Off |
3F8h | 2F8h | 2B0h | 2B8h | On | Off | Off |
3F8h | 2F8h | 1B0h | 1B8h | Off | On | Off |
EXPANDED MODE ADDRESS SELECT | ||||||
Port 1 (J4) | Port 2 (J3) | Port 3 (J1) | Port 4 (J2) | SW1/1 | SW1/2 | SW1/3 |
280h | 288h | 290h | 298h | On | On | Off |
3E0h | 3E8h | 2E0h | 2E8h | Off | Off | On |
2A0h | 2A8h | 2B0h | 2B8h | On | Off | On |
1A0h | 1A8h | 2A0h | 2A8h | Off | On | On |
INTERRUPT SELECT | ||||||
IRQ | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | |
» | IRQ5 | Off | Off | Off | On | Off |
IRQ2 | On | Off | Off | Off | Off | |
IRQ3 | Off | On | Off | Off | Off | |
IRQ4 | Off | Off | On | Off | Off | |
IRQ7 | Off | Off | Off | Off | On |
PRIMARY PORT NORMAL/FORCED TRUE SELECT | |||
Setting | JP7/A | JP7/B | JP7/C |
Normal | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
Forced True | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
PRIMARY PORT DTE/DCE SELECT | |
Jumper JP8 | |
DTE | DCE |
SECOND PORT NORMAL/FORCED TRUE SELECT | |||
Setting | JP6/A | JP6/B | JP6/C |
Normal | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
Forced True | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
SECOND PORT DTE/DCE SELECT | |
Jumper JP5 | |
DTE | DCE |
THIRD PORT NORMAL/FORCED TRUE SELECT | |||
Setting | JP1/A | JP1/B | JP1/C |
Normal | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
Forced True | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
THIRD PORT DTE/DCE SELECT | |
Jumper JP3 | |
DTE | DCE |
FOURTH PORT NORMAL/FORCED TRUE SELECT | |||
Setting | JP2/A | JP2/B | JP2/C |
Normal | Pins 1 & 2 closed | Pins 1 & 2 closed | Pins 1 & 2 closed |
Forced True | Pins 2 & 3 closed | Pins 2 & 3 closed | Pins 2 & 3 closed |
FOURTH PORT DTE/DCE SELECT | |
Jumper JP4 | |
DTE | DCE |