29 Dec
2014
29 Dec
'14
5:12 a.m.
On Sun, 28 Dec 2014 07:55:58 -0800 Al Kossow wrote:
Also, if someone has one, I'm interested in getting a first-generation 500A CPU
card (the one with DIP DRAMs) since I'd like to get a good picture of it.
I have one also from my 16500C upgrade, if you need one.
29 Dec
29 Dec
9:24 a.m.
Perhaps Martin Jones will give rights to the photos on this page?
Jim
http://martin-jones.com/category/hp-16500ab/
While I'm sending, this has the rom images someone shared. Referenced
from martin's page above.
http://www.jammarcade.net/firmware/
http://www.jammarcade.net/files/Equip/HP16500A%20ROMs.zip
On 12/29/2014 5:12 AM, Craig Ruff wrote:
On Sun, 28 Dec 2014 07:55:58 -0800 Al Kossow wrote:
Also, if someone has one, I'm interested in
getting a first-generation 500A CPU
card (the one with DIP DRAMs) since I'd like to get a good picture of it.
I
have one also from my 16500C upgrade, if you need one.
10:27 a.m.
On Mon, Dec 29, 2014 at 9:24 AM, jwsmobile <jws at jwsss.com> wrote:
Perhaps Martin Jones will give rights to the photos on
this page?
Jim
http://martin-jones.com/category/hp-16500ab/
I did the 16500-66507 and 16500-66510 CPU board scans there at 300dpi.
The original scans were 4800x3000. I could rescan those at a higher
resolution if anyone wanted that. I think my Microtek 9800XL is
supposed to do up to 1600dpi.
I don't have an example of the 16500-66503 1MB CPU board myself to scan.
10:50 a.m.
On 12/29/14 10:27 AM, Glen Slick wrote:
On Mon, Dec 29, 2014 at 9:24 AM, jwsmobile <jws at
jwsss.com> wrote:
I only need to borrow the 16500-66503, if someone happens to have one in
the Bay Area.
I spent some time over the weekend experimenting with shooting pictures of
boards, so there are a bunch of new images in various places on bitsavers.
Getting good images is actually quite difficult. You want a lot of light
to get decent depth of field on boards, but too much and you get glare off
the solder mask. and shiny surfaces.
There is one picture I'm particularly proud of
http://bitsavers.informatik.uni-stuttgart.de/pdf/appliedMicrosystems/photos…
Perhaps Martin Jones will give rights to the
photos on this page?
Jim
http://martin-jones.com/category/hp-16500ab/
I did the 16500-66507 and 16500-66510 CPU board scans there at 300dpi.
The original scans were 4800x3000. I could rescan those at a higher
resolution if anyone wanted that. I think my Microtek 9800XL is
supposed to do up to 1600dpi.
I don't have an example of the 16500-66503 1MB CPU board myself to scan.
11:01 a.m.
I think my Microtek 9800XL is
Using a scanner works quite well if you don't need much depth of field.
You do have to be very careful not to scratch the glass, which is very
easy to do. I just had to replace it on the Epson Perfection that I use
for manual covers from scanning boards on it.
supposed to do up to 1600dpi.
11:38 a.m.
Yeah, I know how hard it can be to get pictures of boards, enclosures, etc.
I suggested scanning because I heard that's how the folks who put together
the Q-bus Visual Field Guide did it and I feel they had pretty good
results...
Given optimal conditions you can get nice results with a good camera. I had
a friend of mine shoot my ROLM CBX boards with a Canon 5D at maybe 30-40
degrees off vertical with them sitting on a piece of plywood under direct
sunlight (outside in the middle of summer) and I was very pleased with how
it turned out
(see: http://wildflower.diablonet.net/~scaron/rolmfieldguide/index.html)
I never really had good luck with the camera indoors under artificial
lighting though, although I don't have much in the way of professional
lighting gear... I was always trying to just shoot under standard
fluorescent shop lights... I find it hard to get that balance in contrast,
where no part of the board is too dark, without annoying glint, shine or
reflections on other bits of the board.
The one I have is a 66503 Rev B board with 8x TMS44C256 DIP RAMs... As I
say, I'm only good for 600 DPI or so but I'm happy to scan the one I've
got. If you were local I'd just give it to you.
Best,
Sean
On Mon, Dec 29, 2014 at 2:01 PM, Al Kossow <aek at bitsavers.org> wrote:
I think my Microtek 9800XL is
Using a scanner works quite well if you don't need much depth of field.
You do have to be very careful not to scratch the glass, which is very
easy to do. I just had to replace it on the Epson Perfection that I use
for manual covers from scanning boards on it.
supposed to do up to 1600dpi.
12:35 p.m.
On 12/29/14 11:38 AM, Sean Caron wrote:
The one I have is a 66503 Rev B board with 8x TMS44C256 DIP RAMs... As I
say, I'm only good for 600 DPI or so but I'm happy to scan the one I've
got. If you were local I'd just give it to you.
That would be fine. Actually 300 DPI off a scanner would do. The only problem
that you'll have is good focus on the top side because of the face plate and
connectors.
30 Dec
30 Dec
3:48 p.m.
On Mon, 29 Dec 2014, Al Kossow wrote:
I spent some time over the weekend experimenting with
shooting pictures of
boards, so there are a bunch of new images in various places on bitsavers.
Getting good images is actually quite difficult. You want a lot of light
to get decent depth of field on boards, but too much and you get glare off
the solder mask. and shiny surfaces.
Have you tried tent lighting?
There are cheap light tents on eBay ($21 for 20")
It will make make the lighting so flat that you will get little or no
glare.
3413
days inactive
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8 comments
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participants (6)
-
aek＠bitsavers.org -
cisin＠xenosoft.com -
cruff＠ruffspot.net -
glen.slick＠gmail.com -
jws＠jwsss.com -
scaron＠umich.edu