There's a couple of rcbus 8085 boards and a bunch of devices using Pico
chips to emulate odder or hard to find IO devices. Wonder what it would
take to persuade model T stuff to run on it

On Tue, 3 Nov 2026, 16:28 Daniel L, <[email protected]> wrote:

>
>
> On November 1, 2026 8:28:20 PM PST, Joshua O'Keefe <
> [email protected]> wrote:
>
>> On Nov 1, 2026, at 6:32 AM, Alan Cox <[email protected]> wrote:
>>>
>>> You need some reasonable amount of fast storage and some banked memory. A 
>>> TRS80 model 4 with the full RAM option and the tandy hard drive would have 
>>> been the historical kind of machine you'd have needed at the beginning of 
>>> the 1980s to run a Unix clone so not really a good match for the T. It does 
>>> run on the Amstrad NC100/200 machines which are a similar kind of Z80 based 
>>> platform but with 1MB of PCMCIA storage which is what makes it sort of 
>>> viable (it's still not terribly useful)
>>>
>>
>> This description sounds like the REXCPM is perfectly suited to making it go; 
>> apart from the lack of display parity, it's easily a peer to its 
>> contemporary Z80 desktop systems from the specs standpoint. Storage at 
>> memory speeds, full address space, it's all in there. Without expansion, I 
>> can't imagine it'd fit. The C64's "breadbin" unix-like project has far fewer 
>> features and barely fits on the machine at all.
>>
>> I look forward to seeing how Fuzix continues to progress. It's just hard to 
>> picture the 100-series as being suited for it at all without hardware being 
>> added.
>>
>> That was my feeling. I considered getting the cpm rex a few years ago but
> opted against it. It looks fun - but at the end I kept asking myself
> 'why?'  The backpack was the best decision for me and that was rather
> recent. I like my trusty 200 as it is.
>
> For cpm I am considering a build of the rc2014. Every now and again I'll
> peruse the rc2014 bbs and play on the cli. The rc2014 really strokes my
> permacomputing urges.
>
> daniel
> sysop  | air & wave bbs
> finger  | [email protected]
>

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