Envelope-to: craig@sbc-85.com
Delivery-date: Tue, 02 Aug 2022 18:28:47 -0500
Message-ID: <c45fa367-235f-8931-f2d6-1c6d54290707@opsol.com.au>
Date: Wed, 3 Aug 2022 09:28:30 +1000
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Subject: Re: [SBC-85] Comment: "STD Bus 8085 SBC V1.0.2"
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To: craig@sbc-85.com
References: <WU1CVQDjFAnTP2hThwqMv5R5lzh27MxdkAbXYsiXo@sbc-85.com>
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 <771795c1-1de2-35a1-60b8-4265e1ad3f3b@opsol.com.au>
 <083b01d8a60f$8eb58290$ac2087b0$@sbc-85.com>
From: Denis Dowling <dpd@opsol.com.au>
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Hi Craig,

Sorry about not getting back to you. Things have been a little busy here 
with work and a bit of a deep dive repair of a HP 8662A signal generator 
I got for cheap. The interesting thing about the older HP gear is that 
they are constructed with all with separate cards in edge connectors. 
The service manual goes through running the system with just the CPU 
card installed then adding memory and then various IO cards to diagnose 
what cards introduce faults. Really clever design using a small ROM on 
the CPU card that you can jumper in to turn on some basic diagnostics.

Anyway, I saw your latest video of the STD-85 board and it looks great. 
It is such a huge effort to go from the initial idea to a fully working 
card. I would be keen to get my hands on one of the STD-85 cards so if 
you let me know what the cost and postage is to Melbourne I will Paypal 
you the amount.

Regards,
Denis


On 2/8/22 11:31 am, craig@sbc-85.com wrote:
> Hi Denis,
>
> I have been testing the STD-85 board, updating documentation, etc., thanks again for finding that mistake or I would have had another round of boards about now.
>
> I still have your Pro-Log 8085 card here but it you would rather, I can send you the bare STD-85 board and a Pro-Log memory card like the 7702A?
>
> the last few cards I sent to Australia (Melbourne) was just shy of $20.  And another set to Australia (I forget where exactly but east coast) was about the same and each took the order of 10 days to get there.
>
> let me know if this sounds like something you would like to do.
>
> regards
>
> craig
>
> -----Original Message-----
> From: Denis Dowling <dpd@opsol.com.au>
> Sent: Tuesday, March 8, 2022 2:28 AM
> To: craig.andrews@tessol-inc.com
> Subject: Re: [SBC-85] Comment: "STD Bus 8085 SBC V1.0.2"
>
> Hi Craig,
>
> Understand about the shipping. I have had not had a good run recently with USPS shipping from the US. Some sort of strange shutdown in December held up all my shipments for 3 months. I will do a bit of research on the best option. Anyway I am happy to just keep following alone with this project.
>
> Regards,
> Denis
>
>
> On 8/3/22 11:38 am, craig.andrews@tessol-inc.com wrote:
>> Hi Denis, I hope you don't mind that I am sending you an email rather than back and forth in the comments.  Since you aren't expecting this email address, please confirm receipt so I can make sure it isn't stuck in your spam folder.
>>
>> The development hardware (and software tools) available now are remarkable.  It amazes me any time I fire up my logic analyzer or digital scope just how far we have come.
>>
>> I have a nice Pro Log 8085 board here for you with your name on it.  I thought it was a 7801 but now that I look at it I think it is a 7805.
>>
>> I didn't mean to be deceptive, but I am giving the board away, not the shipping.   Shipping would run about $30 or you can send me a prepaid label that I can print out and stick to the envelope.  I can split the shipping with you since you saved me a wasted round of circuit board revisions.
>> I can get you dimensions and weights if you still want the board.
>> Let me know what you would like to do.
>>
>> Again, thanks for your valuable feedback on the design of the STD bus CPU board.
>>
>> Regards
>>
>> Craig
>>
>> -----Original Message-----
>> From: Denis Dowling <wordpress@sbc-85.com>
>> Sent: Monday, March 07, 2022 12:54 AM
>> To: craig.andrews@tessol-inc.com
>> Subject: [SBC-85] Comment: "STD Bus 8085 SBC V1.0.2"
>>
>> New comment on your post "STD Bus 8085 SBC V1.0.2"
>> Author: Denis Dowling (IP address: 118.210.202.27,
>> 118-210-202-27.tpgi.com.au)
>> Email: dpd@opsol.com.au
>> URL:
>> Comment:
>> I noticed that some parts in KiCAD are huge. It makes for a much cleaner schematic when you redo these symbols.
>>
>> When I was a University I remember using a Z80 STD bus board for some lab experiments. We had some wire wrap STD expansion boards to wire up some IO expansion stuff. It was a great introduction to embedded systems. We were using a C cross compiler hosted on a unix minicomputer and you push the compiled binary code to the boards with xmodem I think. I have recently been doing work on a Jetson Xavier so everything is hosted on the couple of hundred dollar development board.
>> If you have a spare CPU card that would be neat but if the postage to Australia is going to be a killer then don't worry about it. I will keep an eye on your design an maybe pickup a board when you have completed it.
>>
>> You can see all comments on this post here:
>> https://sbc-85.com/download/std-bus-8085-sbc/#comments
>>
>> Permalink: https://sbc-85.com/download/std-bus-8085-sbc/#comment-35
>> Trash it:
>> https://sbc-85.com/wp-admin/comment.php?action=trash&c=35#wpbody-conte
>> nt Spam it:
>> https://sbc-85.com/wp-admin/comment.php?action=spam&c=35#wpbody-conten
>> t
>>
>>
>