From: Mark Bell (bytehead_at_bellatlantic.net)
Date: Sat Apr 15 2000 - 14:22:52 EDT
At 10:09 AM 04/15/2000, m.o.davis_at_gte.net wrote:
>** Reply to note from "Aaron W. Brown" <aaron_at_designcraft.com> Fri, 14 Apr
2000 12:43:39 -0500
>
>
>> The 560 is not Cardbus, right? Make sure you get a 10mbps (16 bit)
>> PCMCIA card.
>
>I have a 16-bit Intel 10/100 PC card. Works fine here. IOW, a 32-bit slot is
>not a prerequisite for 100 mb/s speed.
If you have a cardbus capable machine (32-bit PCI spec for mobile machines)
and your network needs are 100mb/sec (100megabits per second = 12.5megabytes
per second), then go with 32-bit. The PCMCIA (PC Card) 16-bit spec is based
on the
ISA spec and maxes out @ 16Mbytes/sec transfer rate (8mhz @ 2bytes), with
clock
cycling issues, actually provides performance that tops out around
8Mbytes/sec and
can be lower than that in many instances.
With a 16-bit PC Card, you will be limiting yourself in the maximum bandwidth
you can receive from your connect. The 32-bit Cardbus PCI spec offers up to
132Mbytes/sec transfer rate (33mhz @ 4bytes).
If any mobile user is going to use high bandwidth devices (Network, SCSI,
etc..)
and can, definitely use cardbus devices. If your system only supports 16-bit
PC Card devices, well, it's better than nothing but expect a potential
performance hit.
10 megabits per second = 1.25Mbytes/sec, so 16-bit PC Card spec can handle it
fairly easily. The same applies to modems.
Mark
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Email: bytehead_at_bellatlantic.net
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