I've got an IQ120, its all random logic, no microcontroller at all.
Joe wrote:
>Bill,
>
> I'm not positive about the 120 having a 1802 since I've never
>disassembled one but I've seen a number of websites that claimed that they
>did. Search for "Soroc Terminal" on Google and you'll get plenty of hits.
>
> Joe
>
>At 03:06 AM 7/2/03 -0400, you wrote:
>
>>Hey Joe,
>>
>>How sure are you about IQ-120's having 1802's? ISTR doing a class project on
>>that, studied the schematics (wish I had those now!), and concluded that
>>the design was very much like a microcoded CPU - some PAL or PGA controlling
>>register transfers, with a state register acting as a kind of micro-program
>>counter... Now I wonder if that was some other terminal. It was 20 years
>>ago, and my memory aint what it used to be.
>>
>>I may be interested in that IQ-130; I'll e-mail you off-list. My IQ-135 is
>>actually in pieces (courtesy of UPS ten years ago). But there's a happy
>>
>ending:
>
>>I've found somebody with an ailing IQ-135 that needs parts. I'm packing
>>
>it up
>
>>for shipping now.
>>
>> Bill.
>>
>>
>>On 29 Jun 2003, Joe <rigdonj_at_cfl.rr.com> wrote:
>>
>>>Hi Bill,
>>>
>>> I THOUGHT it had an 1802 until I took it apart for cleaning/checking.
>>>Then I found out that it had one of those "RARE" NEC Z-80s :-/ It turns
>>>out that this is a model 130 and not a model 120. The 120s did use 1802s.
>>>This one also has the 1602 USART. I searched E-bay and didn't find anything
>>>related to Soroc. I searched the net and found quite a few hits for the
>>>model 120 and only one hit for the 130 and that was a message that Erik K.
>>>posted few weeks ago. I didn't see anything for a 135 but I did see a
>>>mention of a model 140.
>>>
>>>>The one sitting next to me here (an IQ-135) definitely has a z80.
>>>>
>>> Do you need a 130 to go with it? This one is interesting but I don't
>>>have room for things like this.
>>>
>>> Joe
Received on Thu Jul 03 2003 - 17:34:00 BST
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