On Wed, 21 Nov 2001 at 10:30:48, wrote:
(ref: <H0000b5f118f7e56.1006338646.ln4p1327.ldn.swissbank.com@MHS>)
>
>
>> -----Original Message-----
>> From: tony
>> Sent: 19 November 2001 16:46
>> To: ql-users
>> Cc: tony
>> Subject: Re: [ql-users] Q40/Q60 keyboard interface
>> We developed sH on a breadboard which sounds just like your set up/
>> It took many many months to tame the keyboard.
>>
>It all started for me when I got my first 'computer' - a Mk.14. Now
>there's a piece of Sinclair nostalgia. Mine wouldn't work because the
>PCB left the interrupt (level triggered active high) floating, with
>interrupts enabled by the monitor program. Took ages to figure out
>what was going on. It was a magazine article that explained you needed
>to wire the interrupt pin to 0V that eventually got that sorted.
>I recently got my hands on another SC/MP chip - next project is to
>build something around that.
Mine was the UK101 - an unbelievable number of ICs with dodgy sockets.
The QL took over from that, and was ultra reliable in comparison.
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