Subject: Re: (no subject)
From: Christopher E. Brown (cbrown@woods.net)
Date: Mon Mar 25 2002 - 18:15:40 AKST
On Mon, 25 Mar 2002, Peter Q. Olsson wrote:
> Does anyone have recommendations for a single-slot pcmcia modem card?
>
> Also, what is the diff btwn 16 and 32 bit modems? Yeah, I know 16 bits... but
> what else? Are all older modems 16 bit?
PCMCIA V.S. CardBus
The original PCMCIA is a 16 bit bus running as a logical extension of
the ISA bus. (note, logical extension via bridging controller)
Cardbus is a 16/32bit superset of PCMCIA.
A Cardbus bridging controller is connected to both the ISA and PCI
busses. A Cardbus slot will accept Both 16bit PCMCIA and 32bit
CardBus cards, but a PCMCIA slot will only accept 16 bit PCMCIA
devices.
So, 16bit devices are still around because many older or lower end
laptops cannot accept CardBus cards. For a modem it does not really
matter, CardBus was introduced mainly to support things like 100Mbit
ethernet, SCSI interfaces, etc...
-- I route, therefore you are.
This archive was generated by hypermail 2a23 : Mon Mar 25 2002 - 18:16:29 AKST