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Questions about RAM interfacing

(9)
... There is nothing to solve. Address decode drives CE. MRD enables RAM output via OE MWR drives WE And it just works. For an example of this just look at the
David W. Schultz
9
posts
12:16 PM

Coin Cell Challenge: Jump Starting a Car

(7)
... If I were doing it, I'd simply connect 5 supercapacitors in series. Charge each one individually with the coin cell and a series resistor (since the
Lee Hart
7
posts
8:53 AM

VCFMW Photos

(38)
Choose your memory chips?How a diode matrix... blink a low current led on Q Sent from Yahoo Mail on Android
John O'Brien
38
posts
Dec 9

Russian ICs - a list

(14)
The K145 chip family is described here: https://ru.wikipedia.org/wiki/%D0%9A145 If you use the chrome browser, you can click the translate button to see it in
Mark Abene
14
posts
Dec 8

ELF question

(17)
Thanks Andrew! I was quite surprised there weren't more bids on it.  I have seen ELF IIs go for more than what I paid, or slightly less in non working
Brad @ Better Computing
17
posts
Dec 4

Quest Super Elf recreation -- it lives

(7)
Wow! What an accomplishment. That is absolutely outstanding! I took the weekend away from my computer and I’m just now going through my weekend email.
Andrew Wasson
7
posts
Dec 4

Fw: Question: 1802 Cosmac Elf system , help desired...

(26)
... No PDFs, but I do have a Intersil 1982 catalog that covers them. The catalog includes programming instructions. I even have a few actual chips. We used
Lee Hart
26
posts
Nov 30

Help with noisy power affecting ELF 2K composite video

(15)
Another thing to consider is that linear wall warts usually aren't regulated at all, and put out *considerably* more than their rated voltage at zero current -
urrossum@att.net
15
posts
Nov 26

Elf II Bidding oneBay

(8)
Wow, right about the TV ! I just double checked and did indeed say no tape recorder or monitor...Thanx, js John Smith jesmit49@verizon.net ... From:
John Smith
8
posts
Nov 18

1801 Card for my Microtutor found - but there's a catch

(22)
Interesting evaluation, Josh. Although i usually avoid sniping, it is still valid per the eBay rules. The thing to remember is that, as you pointed out, eBay's
Paul Schmidt
22
posts
Nov 18

Dump

(6)
... http://www.retrotechnology.com/memship/1802_spacecraft.html http://www.retrotechnology.com/memship/1802_spacecraft.html Those posts must have been some
thinkpast
6
posts
Nov 18

Cherry keyswitches with caps

(8)
I personally use blue in my primary work and home keyboards because I like the click and I believe it improves my typing speed. -Mark On Fri, Nov 17, 2017 at
Mark Abene
8
posts
Nov 17

New file uploaded to cosmacelf

(541)
Well, it took awhile for the YAHOO forum to get it right. After trying a few more times, my file finally got posted correctly. The first few times, I put up
the-eagle@att.net
541
posts
Nov 17

Latest FPGA-Elf

(11)
thanks Marc. On Wednesday, November 15, 2017, 6:39:14 PM PST, marcpic13@yahoo.com [cosmacelf] wrote:   Hello Marian, The files
Marian Popeanga
11
posts
Nov 15

Sign of the times?

(12)
That is very impressive, 72Mhz, 1 cycle instructions.. wow. For those on the board that aren't familiar with the original 8051, it typically ran at 12Mhz but
joshbensadon
12
posts
Nov 13
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