[Techtoolslist] ABI Boardmaster 4000 chip adaptors

[Andrew Finn]

www.andrewfinn.co.uk/4116.jpg

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> On 7 Aug 2016, at 6:57 pm, Andrew Finn via Techtoolslist <techtoolslist at flippers.com> wrote:
> 
> I have just tried the 4116 adaptor in the ABI chipmaster and it generates the voltages just fine, so they may have removed the schematic from there website so they can sell the overpriced adaptors for themselves I guess!!
> 
> I will try and stick a pic up later of the adaptor on my website and post a link if anyone is interested in seeing the 4116 adaptor
> 
> Andrew
> 
> Sent from my iPhone
> Please excuse any spelling or grammar mistakes as this was sent from my iPhone
> 
>> On 7 Aug 2016, at 6:46 pm, Andrew Finn via Techtoolslist <techtoolslist at flippers.com> wrote:
>> 
>> Ah thanks for that!! I have had a dig around in the box of bits I got with my boardmaster and HAVE discovered I have the 4116 adaptor!! It generates the +12v and -5v well from the 5v supply using a 556 some caps and diodes! But when the boardmaster is set to 75188 there is only 2v at the supply to the adapter, so wondered how the supply's were generated in the 75188 board, when I can get round to it I will have to document the 4116 board as it appears to work fine generating the voltages but don't have any 4116 ran to test it on
>> 
>> Andrew
>> 
>> Sent from my iPhone
>> Please excuse any spelling or grammar mistakes as this was sent from my iPhone
>> 
>>> On 7 Aug 2016, at 6:33 pm, Paul Hogger <simply.nes at btopenworld.com> wrote:
>>> 
>>> Hey,The 4116 adaptor is covered here (near the bottom) http://www.ukvac.com/forum/abi-b4k-test-basic_topic339944.html I've tried to gather as much info / files as I could since picking up my boardmaster but I've never come across any adaptor info for the 75188. There doesn't seem to be that many people that own / use the bm4k these days though which doesn't really help. Judging by the serial numbers I've seen I don't think abi sold more than 200-300 units and how many of them have survived... so that probably explains it.
>>> I recently got a message from a german repairer / abi4k owner that passed up the long lost masterlink software at some computer fair / flea market as he didn't know what it was at the time and so far hasn't been able to track down the seller. :/
>>> 
>>> How are things going with the keyboard adaptor? do you think it'll ever get released?
>>> Cheers Paul.
>>> 
>>> 
>>>  On Sunday, 7 August 2016, 17:28, Andrew Finn via Techtoolslist <techtoolslist at flippers.com> wrote:
>>> 
>>> 
>>> Hi
>>> 
>>> Does anyone have any info / circuits on the 75188 adaptor ( also known as the mc1488 rs232 transceiver) so these can be tested in the ABI boardmaster 4000? There is also a 4116 ram adaptor too so the boardmaster tells me!! 
>>> 
>>> Google on this occasion is not my friend as it comes up with nothing out of the whole of the Internet!!!
>>> 
>>> Many thanks
>>> Andrew
>>> 
>>> Sent from my iPhone
>>> Please excuse any spelling or grammar mistakes as this was sent from my iPhone
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