On 26/10/2015 17:09, "John Robertson" wrote:
> Hi Adrian,
>
> Perhaps one final test for your 2332s is to do a Diode Test on the pins
> relative to the ground pin (pin 12) and Vcc pin (24). These should sow
> either open or something like 0.6 or higher voltage drop across the pins
> - exchange t
On 26/10/2015 17:09, "John Robertson" wrote:
> Hi Adrian,
>
> Perhaps one final test for your 2332s is to do a Diode Test on the pins
> relative to the ground pin (pin 12) and Vcc pin (24). These should sow
> either open or something like 0.6 or higher voltage drop across the pins
> - exchange
PET ROMs archive here:
http://www.zimmers.net/anonftp/pub/cbm/firmware/computers/pet/index.html
- Original Message -
From: "John Robertson"
To: "General Discussion: On-Topic and Off-Topic
Posts"
Sent: Monday, October 26, 2015 1:09 PM
Subject: Re: PROMs and
On 10/25/2015 4:37 PM, Adrian Graham wrote:
On 25/10/2015 17:19, "John Robertson" wrote:
Hi John and others,
Thanks for that. I removed the diodes and wired 2332 (21) to 2372 (24)
leaving the A11 swap in place, the programmer complained about pin 18
missing. The adapter in front of me is now
On 25/10/2015 17:19, "John Robertson" wrote:
>> Hi John and others,
>>
>> Thanks for that. I removed the diodes and wired 2332 (21) to 2372 (24)
>> leaving the A11 swap in place, the programmer complained about pin 18
>> missing. The adapter in front of me is now wired like this:
>>
>> 2332 (18
On 10/24/2015 5:56 PM, Adrian Graham wrote:
On 24/10/2015 19:18, "John Robertson" wrote:
On 10/24/2015 5:43 AM, Adrian Graham wrote:
Hi folks,
PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed
thanks to a hot air gun. Holes cleaned and I have new turned pin socket
On 10/24/2015 5:56 PM, Adrian Graham wrote:
On 24/10/2015 19:18, "John Robertson" wrote:
On 10/24/2015 5:43 AM, Adrian Graham wrote:
Hi folks,
PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed
thanks to a hot air gun. Holes cleaned and I have new turned pin socket
On 25/10/2015 08:27, "tony duell" wrote:
>> Further digging into available eproms that the programmer can read reveals
>> it CAN read 2532s, specifically the MCM2532 which the datasheet tells me has
>> the same pinout as the 2332. I still get "reverse insertion error" so I'm
>> guessing my PROMs
On 25/10/2015 02:19, "Mike Stein" wrote:
> Probably a silly question, but I assume that if
> you're using a 28-pin socket you are inserting it
> aligned at the end *opposite* pin 1, with pin
> numbers offset by 2 (ie. 2x32 pin1 is 2764/256 pin
> 3, etc.)?
>
Hi Mike,
Yes :)
--
Adrian/Witc
> Further digging into available eproms that the programmer can read reveals
> it CAN read 2532s, specifically the MCM2532 which the datasheet tells me has
> the same pinout as the 2332. I still get "reverse insertion error" so I'm
> guessing my PROMs are toast.
As others have said, normally when
t;General Discussion:
On-Topic and Off-Topic Posts"
Sent: Saturday, October 24, 2015 8:56 PM
Subject: Re: PROMs and EPROMs, specifically
2332/2532/2732
On 24/10/2015 19:18, "John Robertson"
wrote:
On 10/24/2015 5:43 AM, Adrian Graham wrote:
Hi folks,
PET4032 repair cont
On 24/10/2015 19:18, "John Robertson" wrote:
> On 10/24/2015 5:43 AM, Adrian Graham wrote:
>> Hi folks,
>>
>> PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed
>> thanks to a hot air gun. Holes cleaned and I have new turned pin sockets for
>> everything I've removed
On 10/24/2015 5:43 AM, Adrian Graham wrote:
Hi folks,
PET4032 repair continues with all ROMs, video RAM and dodgy sockets removed
thanks to a hot air gun. Holes cleaned and I have new turned pin sockets for
everything I've removed which I'll be fitting this afternoon.
Since the ROMs came out OK
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