FYI: https://www.eejournal.com/article/what-more-8-bit-microcontrollers/
Says:
* Microchip is by far the biggest 8-bit MCU mfgr, with 32% market share.
NXP is second, with 11%. I'm surprised. In unit volume I'd expect
no-name Chinese MCU's to be way ahead of both. Maybe not in dollar
volume.
I stumbled recently upon rather interesting MCU, with interesting capabilities and Forth-friendly autoincrement addressing mode
available -- I mean Intel 80296SA:
Who buys Chinese MCU's?
So willing are customers to stick with brand-name,
dxforth <dxforth@gmail.com> writes:
Who buys Chinese MCU's?
Chinese manufacturers, who make an awful lot of products. See also this:
https://jaycarlson.net/2019/09/06/whats-up-with-these-3-cent-microcontrollers/
So willing are customers to stick with brand-name,
AFAIK there are no brand name 3 cent MCU's.
I stumbled recently upon rather interesting MCU, with interesting capabilities and Forth-friendly autoincrement addressing mode
available -- I mean Intel 80296SA:
( http://datasheets.chipdb.org/Intel/MCS96/MANUALS/27280301.PDF )
and... it turned out that it's "phased out". :(
You must have dug pretty hard to find that device.
Ok, but what use is a few pieces of old stock? If you want to build a one off of something, why not craft your own CPU in an FPGA. It will run faster and you can actually share the design with others.You must have dug pretty hard to find that device.Not really. I was searching for something else -- and stumbled upon this. Looks for a quite
nice chip to me, and from what I see a few Chinese suppliers still offer "old stock" on eBay.
You must have dug pretty hard to find that device.Not really. I was searching for something else -- and stumbled upon this. Looks for a quite
nice chip to me, and from what I see a few Chinese suppliers still offer "old stock" on eBay.
The same use as it was still manufactured: some practice and some fun. I don't mean anythingOk, but what use is a few pieces of old stock? If you want to build a one off of something, why not craft your own CPU in an FPGA. It will run faster and you can actually share the design with others.You must have dug pretty hard to find that device.Not really. I was searching for something else -- and stumbled upon this. Looks for a quite
nice chip to me, and from what I see a few Chinese suppliers still offer "old stock" on eBay.
for production/business, just I noticed that having interesting capabilities it could be a "heart"
of another SBC and with its addressing modes it can be better host for a Forth system than, say,
6502 in my old C-64.
-- it's 16 bit
-- it's quite fast (40 or 50 MHz)
-- it can use up to 1 MB of external RAM
-- it's von Neumann
-- it has quite rich instruction set
Still Paul is right, higher-end MSP430s are interesting for this as well.
Von Neumann? I think there aren't many that aren't von Neumann. I
suppose you are referring to those with a separate program and data
address space?
An rPi has some GBs of RAM for $15, I believe.
I can't think of any reason to use a CPU designed and built in the 90s.
Rick C <gnuarm.del...@gmail.com> writes:
Von Neumann? I think there aren't many that aren't von Neumann. II think that is called Harvard architecture. Von Neumann architecture sometimes refers to code and data being in the same space, so among
suppose you are referring to those with a separate program and data
address space?
other things you can write self-modifying code.
An rPi has some GBs of RAM for $15, I believe.The $15 but currently unobtainium Pi Zero 2 has 512MB of ram, I believe.
But I wouldn't call it an MCU. It's more like a tiny PC or server motherboard.
There are bigger, more expensive Raspberry Pi's with more
memory and they are also currently unobtainium. The one you can
actually get starts at $70 and is built into a keyboard-like enclosure.
It has 4GB.
I can't think of any reason to use a CPU designed and built in the 90s.I'd consider it to be retrocomputing by now, but some people are into that.
An rPi has some GBs of RAM for $15, I believe.
The $15 but currently unobtainium Pi Zero 2 has 512MB of ram, I believe.
But I wouldn't call it an MCU. It's more like a tiny PC or server >motherboard. There are bigger, more expensive Raspberry Pi's with more >memory and they are also currently unobtainium.
Raspberry Pi 4 Modell B, 4GB RAM ...the cheapest one asks EUR 159 for
it, about twice as much as in earlier times.
an...@mips.complang.tuwien.ac.at (Anton Ertl) writes:
Raspberry Pi 4 Modell B, 4GB RAM ...the cheapest one asks EUR 159 forMore like 3x, I think. They are cashing in on the scarcity. How much
it, about twice as much as in earlier times.
do they ask for the model 400, computer only? That is basically the
same as the 4B with 4GB, but it has a different form factor and is
installed inside a keyboard. It is available (by "available" I mean you actually can buy them) for about 70 USD here. While you can only get
model 4's by paying a lot for them, such as on ebay. Rick's plan for
getting rich from his model 4 collection might actually work, depending
on how many he has.
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