INV? =0
selects the inverted signal from INT_CHAN_?
INV? =1
selects the non-inverted signal from INT_CHAN_?
outportb(wBase+0x2a,0);
/* selects the inverted input from all 8 channels */
outportb(wBase+0x2a,0xFF);
/* selects the non-inverted input from all 8 channels */
// For VXC-142/142i and VXC-182i
outportb(wBase+0x2a,0x2);
/* selects the inverted input of INT_CHAN_0 */
/* selects the non-inverted input of INT_CHAN_1 */
// For VXC-112A
outportb(wBase+0x2a,0x8);
/* selects the inverted input of INT_CHAN_0 */
/* selects the non-inverted input of INT_CHAN_1 */
4.2.7 Speed selection
(Read/Write): wBase+0xdc/0xfc
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
N/A N/A N/A N/A N/A N/A
Speed
N/A
Mode
Clock Rate
Baud Rate
Remark
Low Speed (
0
)
1,843,200Hz
50 bps ~115.2K bps
(Default)
High Speed (
2
)
14,745,600Hz
400 bps ~ 921.6K bps
Note. Refer to Sec. 4.1 for more information regarding wBase.
outportb(wAddr+0xdc, 0);
/* low speed mode for port 1 */
outportb(wAddr+0xfc, 0);
/* low speed mode for port 2 */
outportb(wAddr+0xdc, 2);
/* high speed mode for port 1 */
outportb(wAddr+0xfc, 2);
/* high speed mode for port 2
*/
VXC Cards User’s Manual (Ver. 1.1, 06/09.2005, pmh-012-01) -----37
