be_jouster
Junior Member level 1
iocs16
Hi all,
**broken link removed**
"IOCS16
I/O size 16. Generated by a 16 bit slave when addressed by a bus master. The active-low I/O Chip Select 16 indicates that the current transfer is a 1 wait state, 16 bit I/O cycle. Open Collector. "
From what i've understand, the slave ISA device must pull low the IOCS16 line to tell the motherboard that this is 16bit data transfer. And the output from the slave ISA device for the IOCS16 must be open collector type. So, if I design a slave ISA device, do I need to put a pull-up resistor on this line or the pull-up already exist on the motherboard? Hope someone will answer this for me.
Thank you.
Hi all,
**broken link removed**
"IOCS16
I/O size 16. Generated by a 16 bit slave when addressed by a bus master. The active-low I/O Chip Select 16 indicates that the current transfer is a 1 wait state, 16 bit I/O cycle. Open Collector. "
From what i've understand, the slave ISA device must pull low the IOCS16 line to tell the motherboard that this is 16bit data transfer. And the output from the slave ISA device for the IOCS16 must be open collector type. So, if I design a slave ISA device, do I need to put a pull-up resistor on this line or the pull-up already exist on the motherboard? Hope someone will answer this for me.
Thank you.