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Re: HP 3852a extended memory modules info

 

Uhmmm, the MC68000 is in a 64 pin dip that is physically huge.

Any 40 pin version has to be the 8 bit data bus version of the
68000, also known as the 68008, as I recall.

If the M68000 is like most other NMOS and CMOS parts, any driver
can be momentarily shorted to any voltage from 0 to 5V without
harm.

-Chuck Harris


On Wed, 15 May 2024 16:21:09 -0700 "Maciej Kawalkowski"
<kawalkowski.m@...> wrote:
Steven
its in a DIP 40 marked as 1820-3532 which is a MC68000G8 . basically
can be any MC68000.

Maciej
Re: E4402 RF Deck Clips

 

If I may be forgiven for mentioning this for the second time in a few weeks... I just went through this exact same repair with the 1GC1-4210, made my own board, and have traced a (very limited) area around the divider, documented here? :

Also have a YT video about this E4402B that should be easy to find.

Could you tell me what you see? in the System (2) -> Show Hdwrd page, at the line “50ohm 3GHz input” ? I'd like to compile a list of hardware revisions and correlate to the type of divider IC used.
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

BTW, in retrospect, I don't think it was necessary to extend the timeout.
Regards,
Matt
Re: HP 3852a extended memory modules info

 

Steven
its in a DIP 64 marked as 1820-3532 which is a MC68000G8 . basically can be any MC68000.?
Maciej
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

Hello Razvan,

Yes, I had exactly the same problem. ?It would not get past sending the dir command. ?

The first thing I tried was extending the timeout to 180 seconds, after which it seemed to get a little bit further, but still no directory listing. ?
After some internet searching I tried changing the transfer mode to "Active", after which I got the directory listing and was able to download.?

I have attached some screenshots.
Best Regards,
Matt

filezilla_KO4BB_general_settings.jpg
filezilla_KO4BB_transfer_settings.jpg
filezilla_KO4BB.jpg
filezilla_KO4BB_connection_timeout_TLS.jpg

Re: HP 3852a extended memory modules info

 

On 2024-05-15 05:44 PM, Maciej Kawalkowski wrote:
I think I managed to damage the CPU in the process of probing.? The address lines are direct connected to the CPU.? Now need a MC68000.
In what package? I may have one around here somewhere, I think something like a 64-pin DIP.

Steve Hendrix
Re: HP 3852a extended memory modules info

 

Found a seller that has a 128kB card

Re: HP 3852a extended memory modules info

 

Checked the Startup error with ERRSTR?
Displays Check Optional RAM
I think I managed to damage the CPU in the process of probing.? The address lines are direct connected to the CPU.? Now need a MC68000.



Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

Hi Matt,

I saw the notes regarding ftp and I tried different ftp clients none
were able to list the directories.

All connect OK but when "dir" command is sent there is always a timeout.

One of the clients was of course Filezilla but no matter what I would
set it would still not list the directories.

Any chance you can make a screenshot of your Filezilla settings that work?

Thanks,
Razvan

On 15/05/2024 20:23, mattgim via groups.io wrote:
Just to let you know, I managed to download this CLIP last week using
the filezilla ftp program to connect to ftp.ko4bb.com, logging in with
login and password both set to "manualuploads", as per the note at the
very bottom of KO4BB's ftp upload instructions page. ?I can't remember
exactly, but I recall that I had to fiddle around with passive vs active
ftp settings in filezilla to get it to connect and give a directory listing.
Best Regards,
-Matt
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

Just to let you know, I managed to download this CLIP last week using the filezilla ftp program to connect to ftp.ko4bb.com, logging in with login and password both set to "manualuploads", as per the note at the very bottom of KO4BB's ftp upload instructions page. ?I can't remember exactly, but I recall that I had to fiddle around with passive vs active ftp settings in filezilla to get it to connect and give a directory listing.
Best Regards,
-Matt
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

Many thanks from me, too, Martin!

Best regards,
Tom DG8SAQ
Re: HP 3852a extended memory modules info

 

When? memory board is installed and picking any of the addresses the unit provides Error 26 indication which is a non critical error.
I? did not run the ERRSTR? command? ?-? didn't know about it.?
I did run the "test"? and that result is Hex 8000 which is "Optional Memory Failure or Wrong address"
Re: HP 3852A firmware update issue

 

It appears that they were all read as 27256s, as per your second paragraph below. Anders' original reads resulted in 32KB files, the size of a 27256. (as you know) This would've resulted in a read of only half of the data in the two 27512s. This is for the 4.22 set.

As for your first paragraph below, the 4.21 set consists of all 64KB images. I don't know if 4.21 actually is a mix of 27256 and 27512, as I've not looked at that release, but if it is, then your first paragraph would be correct for the 4.21 images, while the second would be correct for the original 4.22 images from Anders.

-Dave

On 5/15/24 11:09, Chuck Harris wrote:
Hi Dave,
Wouldn't the mistake have to have been assuming one or more
of the 27256 EPROMS was a 27512? That would cause the hex file
for the misidentified EPROM to contain a double copy of the
27256's data.... which was noted earlier.
If the mistake went the other way, and was caused by assuming
that a 27512 was a 27256, that would have given a hex file that
contained half of the 512's data. That would result in the newly
burned 27512 containing half data, and half 'FF's.... which I
don't believe has been observed.
-Chuck Harris
On Wed, 15 May 2024 10:28:59 -0400 "Dave McGuire"
<mcguire@...> wrote:
On 5/15/24 01:49, Anders wrote:
If you compare the files with mine, then what did I do wrong all
those years ago? Did I miss that not all EEPROMS were the same type
or perhaps not supported by the GalepIII?
It was a simple and natural mistake to make; no one is looking to
assign blame. Apparently you had assumed they were all 27256s and
read them as such, thus truncating the data from the two 27512s.

Anyway. Last time I played with eproms was on the ZX81. Did not
even have a proper eraser so I used a Philips tanning lamp with the
IR emitters removed :) The Sinclairs had a tokenised BASIC so you
could translate it to swedish by changing just a table of keywords
:) Years later we programmed different fonts for PC graphics cards
and hacked NEC printers that could not print the letter ?.
Neat!

-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Re: HP 3852A firmware update issue

 

I forgot to mention:

Anyone of us who has never made a mistake, that was
well below his experience level should raise his hand
and take a bow?

I have been burning EPROMS for nearly 50 years, and I
have committed both faux-pas mentioned below.

-Chuck Harris


On Wed, 15 May 2024 11:09:17 -0400 "Chuck Harris" <cfharris@...>
wrote:
Hi Dave,

Wouldn't the mistake have to have been assuming one or more
of the 27256 EPROMS was a 27512? That would cause the hex file
for the misidentified EPROM to contain a double copy of the
27256's data.... which was noted earlier.

If the mistake went the other way, and was caused by assuming
that a 27512 was a 27256, that would have given a hex file that
contained half of the 512's data. That would result in the newly
burned 27512 containing half data, and half 'FF's.... which I
don't believe has been observed.

-Chuck Harris
Re: HP 3852A firmware update issue

 

Hi Dave,

Wouldn't the mistake have to have been assuming one or more
of the 27256 EPROMS was a 27512? That would cause the hex file
for the misidentified EPROM to contain a double copy of the
27256's data.... which was noted earlier.

If the mistake went the other way, and was caused by assuming
that a 27512 was a 27256, that would have given a hex file that
contained half of the 512's data. That would result in the newly
burned 27512 containing half data, and half 'FF's.... which I
don't believe has been observed.

-Chuck Harris


On Wed, 15 May 2024 10:28:59 -0400 "Dave McGuire"
<mcguire@...> wrote:
On 5/15/24 01:49, Anders wrote:
If you compare the files with mine, then what did I do wrong all
those years ago? Did I miss that not all EEPROMS were the same type
or perhaps not supported by the GalepIII?
It was a simple and natural mistake to make; no one is looking to
assign blame. Apparently you had assumed they were all 27256s and
read them as such, thus truncating the data from the two 27512s.

Anyway. Last time I played with eproms was on the ZX81. Did not
even have a proper eraser so I used a Philips tanning lamp with the
IR emitters removed :) The Sinclairs had a tokenised BASIC so you
could translate it to swedish by changing just a table of keywords
:) Years later we programmed different fonts for PC graphics cards
and hacked NEC printers that could not print the letter ?.
Neat!

-Dave
Re: HP 3852a extended memory modules info

 

I acquired a new logic analyzer and redid the startup sequence as I was having issues with that logic analyzer.?
I made the wrong assumptions about AEN . It's actually low when asserted.?
I will post the data dump later in the day.?
Re: HP 3852A firmware update issue

 

On 5/15/24 01:49, Anders wrote:
If you compare the files with mine, then what did I do wrong all those years ago? Did I miss that not all EEPROMS were the same type or perhaps not supported by the GalepIII?
It was a simple and natural mistake to make; no one is looking to assign blame. Apparently you had assumed they were all 27256s and read them as such, thus truncating the data from the two 27512s.

Anyway. Last time I played with eproms was on the ZX81. Did not even have a proper eraser so I used a Philips tanning lamp with the IR emitters removed :) The Sinclairs had a tokenised BASIC so you could translate it to swedish by changing just a table of keywords :) Years later we programmed different fonts for PC graphics cards and hacked NEC printers that could not print the letter ?.
Neat!

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Re: N9020A

 

The display screens (for the options) are readable in this listing:
I just search for the number.

ed
Re: HP 8566B PL2 unlock error

 

Which reference divider are you referring to? From the 10MHz reference, the 100MHz reference VCO, or the M/N lock reference that feeds the PLL circuitry?
As stated, do check the PLL 2 diagnostics/ troubleshooting if you want to get to the problem quicker. In my humble opinion, if you follow the diagnostics, you should be able to find the problem in about 1.5 hr. Another thing to try is the adjustment procedure for the PLL circuitry, but do not do any adjustments!, until you have located the problem area and determined that there is no component failure. After you have gone through the adjustment procedure once (no adjusts), then repeat while gently pushing on the adjust for the potentiometer for that portion of the adjustment. You are looking for an abrupt change in readings. All of the voltage readings should be stable to 1-3 mV and the frequency readings should be stable/accurate to less than 100KHz (typically < 10KHz).

Don Bitters?
Re: HP 8360-Series Sweeper CLIP soon available on KO4BB

 

Hi Martin,
Thanks so much !!!!
m.
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