[comp.sys.ibm.pc] Adaptec AHA-1640

kc@sun426a.SanDiego.NCR.COM (Ken Chang) (03/17/90)

Hello there :

	Can someone provide me some technical information about the
Adaptec AHA-1640 Microchannel SCSI adapter ?

The information I would like to obtain is :
- What processor/controller, if any, does this board use ?

- Does it have any on board RAM, if yes, how much ?

- Does this board use the parity bits on the Microchannel bus ?

- Does this board use the parity bit on the SCSI bus ?

- How many SCSI channel does it provide ?

- Am I correct that the transfer rate for this board is:
	MCA         SCSI async        SCSI sync
        8MB/s       5MB/s             2MB/s

- What is the average cost of the board.


Any help will be appreciated.

Ken

neese@adaptex.UUCP (03/20/90)

>	Can someone provide me some technical information about the
>Adaptec AHA-1640 Microchannel SCSI adapter ?
>
>The information I would like to obtain is :
>- What processor/controller, if any, does this board use ?

It is a 20Mhz 16Bit NS-HPC processor.

>- Does it have any on board RAM, if yes, how much ?

Only a small data buffer.

>- Does this board use the parity bits on the Microchannel bus ?

Yes.

>- Does this board use the parity bit on the SCSI bus ?

Yes (Optional, set or uset by the user)

>- How many SCSI channel does it provide ?

Uh, I assume you mean SCSI devices.  Up to the max SCSI allows (56).  The BIOS
supports only 2 HD's as that is what the spec allows for the BIOS.

>- Am I correct that the transfer rate for this board is:
>	MCA         SCSI async        SCSI sync
>        8MB/s       5MB/s             2MB/s

Yes.

>- What is the average cost of the board.

TBD (To be determined)

			Roy Neese
			Adaptec Central Field Applications Engineer
			UUCP @ {texbell,attctc}!cpe!adaptex!neese
				merch!adaptex!neese
				uunet!swbatl!texbell!merch!adaptex!neese

feustel@well.sf.ca.us (David Alan Feustel) (03/23/90)

Is the AHA1640 asynch transfer rate really faster than the synch transfer
rate?
-- 
Phone:	 (home) 219-482-9631 
E-mail:	feustel@well.sf.ca.us	{ucbvax,apple,hplabs,pacbell}!well!feustel	
USMAIL: Dave Feustel, 1930 Curdes Ave, Fort Wayne, IN 46805

neese@adaptex.UUCP (03/26/90)

>Is the AHA1640 asynch transfer rate really faster than the synch transfer
>rate?

OOPPS.  That's what I get for thinking what I read was what I really
read.  Async is 2MB/sec, sync is 5MB/sec.


			Roy Neese
			Adaptec Central Field Applications Engineer
			UUCP @ {texbell,attctc}!cpe!adaptex!neese
				merch!adaptex!neese
				uunet!swbatl!texbell!merch!adaptex!neese