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C compiler for the Elf

(21)
unfortunately the logic for the conditionals is a bit of a brute. It's split between tables in the compiler and macros at assembly time. I'm sure it would be
bill rowe
21
posts
11:30 AM

microFORTH code and documentation for the 1802 and for the 1802I

(7)
Thasnks for the clarification. As said I try to find a balance
juergen2011uk
7
posts
11:28 AM

Sourcing Parts

(6)
I have bought a few new 1802's from eBay sellers, at very fair prices, and been quite happy with the deal. Not sure why the OP wants to avoid buying parts from
ocleide@earthlink.net
6
posts
10:03 AM

USB Serial Pitfalls

(29)
I've had much success using USB dataloggers that accept flash drives as their media. The board is very small, and they have their own DOS-like firmware with a
Mark Abene
29
posts
9:55 PM

Emma Cosmac VIP question

(9)
Hi Josh, Main reason to have different options for the RAM initialisation are, first that the COMX doesn't start with randomised RAM at all, maybe because it
etxmato
9
posts
Mar 28

CDP1805 based hand held calculator

(202)
Is it for sure that pin 21 is tied low? The 2532 data sheet shows it tied high for reading. I would have to fix that but if it's only one pin that would be
bill rowe
202
posts
Mar 26

Original ELF documentation package

(21)
Yikes! You're right about the price! It's in a ceramic package, and lists for $146.30/each (on the Intersil web site). I think I'll stick with the Chinese
urrossum@att.net
21
posts
Mar 26

1806 Timer Q Toggle - Chip Tricks

(9)
I've used decimal adjust instructions for other than their intended purpose before. Examine what they do and you may run into an occasion where it's useful for
Kevin P. Rice
9
posts
Mar 24

New file uploaded to cosmacelf

(491)
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the cosmacelf group. File : /Jon/2532 to
cosmacelf@yahoogroups.com
491
posts
Mar 24

COSMAC Microboard System

(30)
UT62 is a bit banger too, it just has disk routines. I am using UT60 which is basically the same but without disk routines. Unless there is a monitor that
thinkpast
30
posts
Mar 19

Simplest Interrupt handler

(7)
David got it in one. I haven't got the counting routine working quite right but it's not falling down any more. ________________________________ From:
bill rowe
7
posts
Mar 16

wire wrap toggle switch?

(9)
Hello! Not that hard to find Lee. The part is still being made by TI. Check your parts list for logic against the TI website. ... Gregg C Levine
Gregg Levine
9
posts
Mar 16

Great Errors I have Made

(6)
You mean overrunning the buffer? Sure, even at 1.6mhz the 1802 could overrun the host link if it just did repeated out 7's or dma. This particular code would
bill rowe
6
posts
Mar 9

Microboard Updates

(75)
hehe! Scott - everyone's itching to get them! Nobody wants to be left out as with the earlier eBay go-arounds!
josephjohnblackburn
75
posts
Mar 7

Clock program

(31)
... I was trying to keep it under 256 bytes because my Netronics Elf II only has 256 bytes. I had more memory in the hand-built Elf I had many years ago; I
jdripper
31
posts
Mar 5
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