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Tadeusz Pycio
Apr 27, 2020, 10:00:36 AM4/27/20
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Each chip in the Z80 family had its code, 00-CPU, 10-DMA, 20-PIO, 30-CTC, 4x-SIO, ..., 60-Clock, 70-DART, 80-GLU, 90-KIO. What was supposed to be under the code 50?
Bill Shen
Apr 27, 2020, 10:05:13 AM4/27/20
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google Z84C50:
Z84C50, Z80 RAM 80, Z80 CPU/2K SRAM
Tadeusz Pycio
Apr 27, 2020, 10:11:12 AM4/27/20
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The simplest questions have an answer to google ;)... It was produced? I can see that there is even a datasheet.
Edit.
The answer is very disappointing. I expected the I/O system, not Z84C02(kB RAM), something like the MK3886 Combo, or Priority Interrupt Controller for ICs outside the Z80 family. It was better not to ask ;)
Edit.
The answer is very disappointing. I expected the I/O system, not Z84C02(kB RAM), something like the MK3886 Combo, or Priority Interrupt Controller for ICs outside the Z80 family. It was better not to ask ;)
Tadeusz Pycio
Apr 27, 2020, 2:49:27 PM4/27/20
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On FB I asked the same question, it turns out that it was produced because one person claims to have it. I am surprised.
Greg Holdren
Apr 27, 2020, 3:11:40 PM4/27/20
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It exist. Zoom in on the picture here: http://oldcpusrus.xepb.org/pt2793.jpg
Z84C5010PEC
Z80 RAM80
Taken from: http://oldcpusrus.xepb.org/8bit.html
Greg
Tadeusz Pycio
Apr 27, 2020, 3:22:39 PM4/27/20
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Hi, Greg
Thank you for this information, I didn't get it.
PS. If someone has a photo confirming the existence of Z8015 PMMU for the Z8000 family, it will be an evening full of surprises for me.
Thank you for this information, I didn't get it.
PS. If someone has a photo confirming the existence of Z8015 PMMU for the Z8000 family, it will be an evening full of surprises for me.
jopil
Apr 27, 2020, 4:13:46 PM4/27/20
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jopil
Apr 27, 2020, 4:31:06 PM4/27/20
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See also:
A tutorial overview of the Z8003 and Z8004 microprocessors and the Z8010 and Z8015 memory management units: Part 2: Z8000 family memory management devices: [See atachment]
On Monday, April 27, 2020 at 10:22:39 PM UTC+3, Tadeusz Pycio wrote:
Tadeusz Pycio
Apr 27, 2020, 4:40:39 PM4/27/20
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It is not that I know about the existence of the datasheet, whether it existed physically.
Since we are already in this topic, there is one strange for me Zilog product, Z8004 - a processor that could not use MMU, but had virtual memory support. To this day, I do not understand this idea. :)
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