In message <60E9EE56-B365-11D8-A333-000A95B38680@...> ... At this point in time, I'd love to get a CDP1861, if only so I've got a spare for my COSMAC...
... If you really need one I believe that the old RCA Studio II game console uses that chip. You might be able to pickup one of those for a fair price and...
Hi all, ... Yes, that's true. Anyone interested in a CDP1864 might want to look for an MPT-02 console or clone thereof (NOT the -03, that's a totally different...
In message <c9jvq4+r5pn@eGroups.com> ... What's even more "hen's teeth" is a low-cost logic analyser. I've seen HP 1652Bs going on Ebay.com fairly cheaply, but...
... It depends on what you want, and I've seen a fair few that provide international shipping (as well as listings from several different countries.) If you're...
... There are a couple ways to do this. First, somewhere around here I have an HP-1601A logic analyzer that I bought for $20. It is a plug-in for an HP-180A...
There's also BITSCOPE, a budget (or even roll your own if you like) A/D and logic (8-bits) capture-to-PC interface card. Link: http://www.bitscope.com/ Maybe...
Well in case anyone really needs one I believe I still have one of the old Heathkit PC based logic analyzers that had an ISA card and it's own pod complete...
Hi, I was browsing some old magazines yesterday (some other than I was speaking about a few weeks ago), and to my surprise there was a 'Microcomputing' ...
Yesterday, I threw out my knee while running, so I'm stuck sitting or laying down. Great fun. Luckily, the MSI/88e I ordered (and spoke of here) came in....
I ordered 10 units. I powered them all up and they all worked. Of course they come up with the error because the wand or whatever isn't attached. Elliott ... ...
... I agree. I bought several, and they all worked when I put batteries in! 'Course, I don't have any software to use them... We've traced out partial...
... Ok, the trouble was that my scanner's powersupply died, but I hacked another powersupply to work with it. So I managed to scan the pages :) (there are 2). ...
Check in the files section under MSI88CPU. I think there is a textfile of the rom in there somewhere. Here is a direct link: http://f4.grp.yahoofs.com/v1/ ...
Hi - I am interested in the way in which the power savings mode of the 1802 operated, especially how the clock signals and clock generator circuits worked. Any...
Power savings with an 1802 is the basic nature of CMOS logic and it does not have a special power savings mode. Significant amounts of power are used only...
... Simple! It is a completely static chip. Stop the clock at any time, at any point in any cycle, and the power consumption goes to essentially zero....
It's worth a mention that the 1805/1806 processors do enter a special low power mode when an IDL instruction is executed. This mode is exited when an interrupt...
As best as i recall, the 1802 clock can be reduced in speed with a proportional reduction in power. Any Data bus pullup resistors, however absorb more power...
... The other responses have nailed most the 180X details, but if you need to know total system power consumption, then you have to take into account what...
... Well, there are a few more choices than that! :-) 1. Power supply voltage With CMOS, halving the supply voltage makes it use *one fourth* the power. So,...
Thanks Dave - The two ways of entering the PAUSE mode were what I was looking for. It seems that you can enter PAUSE mode either through an instruction (IDLE)...
Binh, that may be something you'd want to post to the group. I've been mostly on the software side of things for the last 20 years, so if you can't find it on...
Lee, Those are valid ways to cut power (along with a whole lot more), but I don't put them in the simple catagory. If the power budget is that tight, then you...
Binh, ... for. ... instruction ... starts ... But the clock DOESN'T stop in either of those two modes. It's still running. Full blast. Even an 1804/5/6 will...
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