Date: Mon, 03.05.21 13:14
Replicas of old computers
03 May 2021 10:51, from Anna Christina Nass -> Augusto Baffa:
AN> I also thought about a PiDP-11
PiDP-11 really looks nice.
I have the KIM-Uno from the same guy.
AB>> Is there anyone into it?
AN> I've built an IMSAI 8080 replica, based on an ESP32 microcontroller.
AN> It's a nice soldering project and looks very nice.
AN> Besides, I've built an RC2014, a "new" Z80-based machine where I'm
AN> using CP/M on, together with several add-on cards (sound, terminal,
AN> RTC .... And I have a SC126, also a "new" design, based on a Z180. It
AN> uses the same bus pinout as the RC2014 and so I can also use the same
AN> add-on cards there. I also use CP/M on this machine.
My problem is I am really terrible at soldering ...
Do you have links to the above 2 projects?
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Date: Mon, 03.05.21 10:18
Re: Replicas of old compu
ACN> Besides, I've built an RC2014, a "new" Z80-based machine where I'm
ACN> using CP/M on, together with several add-on cards (sound, terminal, RTC
ACN> .... And I have a SC126, also a "new" design, based on a Z180. It uses
ACN> the same bus pinout as the RC2014 and so I can also use the same add-on
ACN> cards there. I also use CP/M on this machine.
How's the SC126 compare to the RC2014? I've already got a few RC2014s that
I don't use enough and I'm debating whether to add the SC126 to my project
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Date: Tue, 04.05.21 12:25
Re: Replicas of old compu
RL> How's the SC126 compare to the RC2014? I've already got a few RC2014s
RL> that I don't use enough and I'm debating whether to add the SC126 to my
RL> project list.
If you have a RC2014 with the 512k ROM/RAM module and RomWBW, the
difference isn't that big.
The main advantages of the SC126 are (in my opinion):
- faster CPU, but if you want to play games that are specific to a certain
CPU speed, it might be too quick...
- SD card support, but the SD card is slower than the CF module of the
- software controllable serial port speed
- it has 8 LEDs which can be controlled by software, no extra module
- two ROM chips instead of one, selectable via jumper
- all in one package
In my opinion, most of the things can be added to a RC2014 as well, even
the Z180 is available as a module afaik.
The software controllable serial port speed is also possible with a CTC
and SIO/2 module from Steve Cousins.
For some people, the most important factor is the "all in one" package.
I've added some modules to my SC126:
- VT132 terminal module
- WD floppy controller (+ 3,5" drive)
- additional bus module with:
- SC104 SIO/2 module
- IDE module (+ hard drive)
- YM sound card
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