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GoForSmoke


My copy is long gone, that was in another life. Every time this comes up I say I'd like to make a retro Z80 board. One day.

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Rob


If they made single-chip Z80 computers, how many would you buy?

I remember hearing that a single-chip 286 PC was done for military use before 1990, but no details. At the time I had an Amiga 1000 and a turboXT.
Nick Gammon on multitasking Arduinos:
1) http://gammon.com.au/blink
2) http://gammon.com.au/serial
3) http://gammon.com.au/interrupts

Graynomad

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To get C++ you have to buy the > 256k code size version for $256, major PITA and not a good way to entice people onto the platform I feel.

No longer the case, the latest LPCXpresso free version supports C++.

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If they made single-chip Z80 computers, how many would you buy?

Probably none, but I still like the idea of a retro board. Just started thinking about it (yet again) today.

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Rob
Rob Gray aka the GRAYnomad www.robgray.com

Jack Christensen


No longer the case, the latest LPCXpresso free version supports C++.


That's great news, thanks for the update, Rob!
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

kf2qd

Graynomad and Pico - I have the Z80 assembler, dissassembler and emulator working under Windows. Writtten in VB6. Now working on a set for the 65C02...

What i really want is a Z80, 64K of RAM and 8K of ROM (setup so the rom can be switched off and run totally in RAM) along with a serial port (or 2)  all on one chip. Should be possible to put an entire CPM machine on a chip, with just the I/O necesary to hook op a Compact Flash for storage...

Hey, We all have our fantacies.

Graynomad

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Z80, 64K of RAM and 8K of ROM (setup so the rom can be switched off and run totally in RAM) along with a serial port (or 2)  all on one chip

No internal ROM/RAM but the HD64180 was close, MMU with bank switching and 2x UARTs.

Here's one in a board from the days when men were men, chips had legs and PCBs were the size of a serving platter not the wussy little credit-card sizes we have now.

http://www.80bus.co.uk/pages/gemini/images/GM880.jpg

I mean what use is a PCB if it can't double as a sand plate for your high-lift jack?

I used the 64180 years ago, very nice chip. Every 6 months or so I fantasise about building a retro board, it would be pretty easy. One day.

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I have the Z80 assembler...Writtten in VB6.

Talking of retro.

I also have a VB6 program, started writing it 15 years ago and it's become quite an integral part of my photography DAM workflow. Trouble is it's getting harder to use VB6 stuff with every new version of Windows and I suspect you can't run it at all under W8. How are you going to deal with this? Any pointers?

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Rob
Rob Gray aka the GRAYnomad www.robgray.com

kf2qd

So far I have been able to use it on XP and Win7, and run the programs on Win8.  I hate the new versions of Visual Studio as it seems they went out of their way to break it and make it as slow as possible. Don't know exactly why they had to screw it up so bad when they went to .net, but VB in that environment is a totally different animal, and much slower to develop with.

Just today I was writing a couple of small programs, one on the survaillence computer at our transmitter, and one here at master control (tv station) to let the operator know when one of the cameras sees something. A total of less than 30 lines of code. Runs the program with the camera name on the command line and passes the that to a computer at the station which logs the event. Tomorrow I have to work on having it ring a bell...

Graynomad

Yes I think VB got too big and complex after 6, when it became part of the VS bloatware. VB6 with a few tweaks is all you need to make good Windows GUI programs. I have done some work with VS but life's too short for all that crap. There was a VB6 replacement that looked promising, the environment looked 100% the same and the code almost ported across without change IIRC. Can't remember what it was called now.

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Rob
Rob Gray aka the GRAYnomad www.robgray.com

westfw

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If they made single-chip Z80 computers, how many would you buy?

They do, you know.  Zilog continued along and did microcontroller versions of the z80 with on-chip memory and peripherals.
It looks like the top-of-the-line runs single-cycle at 50MHz, has 256k flash, 8k ram, and various peripherals including ethernet.
Also, NEC did enhanced Z80 things, before becoming part of Renesas, and some of the Renesas CPUs are rather depressingly z80 like.  Including the recently hyped RL78 series...

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