[sdiy] how you got started with your current µC?

[Dave Manley]

Ah, Mick and Brick!  Back in the early 80s I took a bit slice class/lab.  We built a lot of projects out of AMD29xx parts leading to a large breadboard implementing a12-bit (!) wide stack based processor. Custom instruction set supported by a simple assembler.  Used  it to control some DACs for scope xy graphics moving Towers of Hanoi discs around.

I bought a broken Eventide H910 a while ago and saw it used the same AMD29xx parts. That could be a project to get working again...

-Dave

On September 20, 2015 3:36:46 PM PDT, Vinicius Brazil <brazil.v at gmail.com> wrote:
>Yes, Tim.
>One of my biggest thrills hardware / firmware was working on a CPU 2901
>of
>three phases (ran three programs simultaneously, one on each clock
>phase,
>33MHz). beginning of the decade of 80. A total madness ...
>
>-Vinicius Brazil
>brazil.v at gmail.com
>
>On Sun, Sep 20, 2015 at 6:29 PM, Tim Ressel <timr at circuitabbey.com>
>wrote:
>
>> Bit slice as in AND 2901? That is hard core. I own a copy of Mick and
>> Brick, but never made a bit slice.
>>
>> --tr
>>
>> On 9/20/2015 2:17 PM, Vinicius Brazil wrote:
>>
>> I started with the discrete bitslice cpus, after the 8088/8086,
>80188/186,
>> 8051, and after National COP8 families and Analog Devices ADSP21xx,
>and
>> finally Microchip PICs & dsPICs.
>>
>> -Vinicius Brazil
>>
>> On Sun, Sep 20, 2015 at 5:54 PM, Tim Ressel <timr at circuitabbey.com>
>wrote:
>>
>>> My first proc was a COSMAC 1802, on a breadboard, with manual entry
>>> switches, powered off a car battery, in a horse barn. (beat that!)
>>>
>>> The 6809 came at my first engineering tech position. It was a
>hand-wired
>>> proto board. Then 68000 and 68020, then Atmel AVR. Recently DSPIC
>and
>>> STM32. These were all pre-made boards.
>>>
>>> --TimR
>>>
>>>
>>>
>>> On 9/19/2015 2:46 PM, Michael Zacherl wrote:
>>>
>>>> I got curious:
>>>> did you people start with a typical dev-board of PIC/AVR/STM32/...
>?
>>>> m.
>>>>
>>>> On 19.Sep 2015, at 21:28 , Richie Burnett <
>>>> <rburnett at richieburnett.co.uk>rburnett at richieburnett.co.uk> wrote:
>>>>
>>>> No probs here either.
>>>>>
>>>>> -Richie,
>>>>>
>>>>> ---- Pete Hartman wrote ----
>>>>>
>>>>> On Sat, Sep 19, 2015 at 4:43 AM, Gordonjcp < <gordonjcp at gjcp.net>
>>>>>> gordonjcp at gjcp.net> wrote:
>>>>>>
>>>>>> On Fri, Sep 18, 2015 at 10:40:37PM +0100, Tom Wiltshire wrote:
>>>>>>
>>>>>>> I'd probably have to agree. TL07x op-amps would be my most used
>IC.
>>>>>>> Not very glamorous, but they're the glue that holds a million
>audio
>>>>>>> circuits together.
>>>>>>>
>>>>>>> Aside from that, PIC uPs for digital, and SSM2164/V2164 for
>analog.
>>>>>>>
>>>>>> I've never liked PICs.  They're slow, expensive and very hard to
>>>>>> develop for, thanks to the sheer lack of support - and last time
>I looked
>>>>>> you had to pay extra for surface-mount!
>>>>>>
>>>>>> I used AVR for a bit but I'm moving over to STM32 - ridiculously
>cheap
>>>>>> and ridiculously fast.
>>>>>>
>>>>>> This must be a personal taste thing, as I have no problems at all
>>>>>> programming with PICs.  The documentation is very good, and there
>are lots
>>>>>> of examples to get over the most difficult part which is how to
>set the
>>>>>> various switches (in AVR world the equivalent is the "fuses"). 
>I've
>>>>>> actually had more frustration figuring out how to set fuses, to
>be honest.
>>>>>> I haven't played with the STM32s, I'll certainly have to give
>that a try.
>>>>>>
>>>>> --
>>>> http://mz.klingt.org
>>>>
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>>>>
>>> --
>>> --Tim Ressel
>>> Circuit Abbey
>>> timr at circuitabbey.com
>>>
>>>
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>>
>>
>>
>> _______________________________________________
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>>
>> --
>> --Tim Ressel
>> Circuit Abbeytimr at circuitabbey.com
>>
>>
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>>
>
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