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From: phil@brahms.amd.com (Phil Ngai)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Upgrading 256K VGA to 512K VGA card
Message-ID: <1990Dec26.193559.5817@amd.com>
Date: 26 Dec 90 19:35:59 GMT
References: <7900@hub.ucsb.edu> <62M^M8#@rpi.edu> <1990Dec25.172332.14826@xrtll.uucp>
Sender: usenet@amd.com (NNTP Posting)
Distribution: comp
Organization: Advanced Micro Devices, Inc; Sunnyvale, CA
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In article <1990Dec25.172332.14826@xrtll.uucp> silver@xrtll.UUCP (Hi Ho Silver) writes:
|   Are you sure your manual is correct?  If it's a 16-bit card using 256Kx4
|chips, the minimum amount of memory on it would be 512K (because you'd need
|four chips to make it 16 bits wide, and that would be 256Kx16 bits = 512K).

Wrong. I know (intimately) at least one (Super) VGA chipset that offers a
16-bit interface to the ISA bus using only two 256Kx4 RAM chips. How do
they do it? Think about it...

|I haven't seen a VGA card that uses 256Kx4 chips (though that certainly
|doesn't mean there aren't any).  Have a look at your board and count the

There are several.

Why do people like to post when they don't really know?

--
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