25 Sep
1999
25 Sep
'99
6:52 a.m.
Before that, most micros used off-the-shelf ICs.
Although some of these
chips are getting rather hard to find now -- some disk controllers
(WD1771, Intel 8271, etc) are _very_ difficult to find new.
Not all are that difficult - BG Micro ( http://www.bgmicro.com/ ), for
example, has a fairly decent selection of WD floppy controller chips.
While on the topic of replacing "classic" VLSI chips, are there any
FPGA's still available in 40-pin packages anymore? I've seen PGA-to-DIP
adapters, but those are a bit clunky (and overkill!)
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
25 Sep
25 Sep
6:47 a.m.
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27 Sep
27 Sep
10:11 a.m.
Tim Shoppa wrote:
While on the topic of replacing "classic"
VLSI chips, are there any
FPGA's still available in 40-pin packages anymore? I've seen PGA-to-DIP
adapters, but those are a bit clunky (and overkill!)
Heck, it's hard to even find any decently large ones in 68 or 84 PLCC.
I've been tempted to get in the business of buying big FPGAs in die form,
and having them custom packaged.
I guess I must design atypical stuff. Apparently (judging by the standard
FPGA products), most engineers seem to need zillions of I/O pads and not
so much logic. My designs seem to be the opposite, and none of the FPGA
vendors address this.
Sigh.
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