A place to discuss everything Dragon related that doesn't fall into the other categories.
robcfg
Posts: 1542 Joined: Sat Apr 04, 2009 10:16 pm
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by robcfg » Mon Mar 09, 2015 10:36 pm
Thank you very much!
Mine also had a fair amount of glue, but nothing a sharp blade cannot fix
robcfg
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by robcfg » Tue Mar 10, 2015 9:23 am
By the way, can you tell if the eprom type is 2732 or 2532?
My guess is that it's a 2732, but just to be sure.
I also prettyfied the IC list and added the needed datasheets.
rolfmichelsen
Posts: 299 Joined: Wed Apr 08, 2009 8:43 pm
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by rolfmichelsen » Tue Mar 10, 2015 10:13 pm
It's a 2732, verified by checking that A11 from the cartridge connector is wired to pin 21 on the PROM.
-- Rolf
dublevay
Posts: 175 Joined: Wed Jan 23, 2019 3:41 pm
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by dublevay » Sat Jul 01, 2023 8:29 am
simon wrote: ↑ Sun Mar 08, 2015 2:33 pm
*IF* this speech cartridge is *ANYTHING* like the tandy SSC then it has a PIC chip in front of the SPO/AY.....
if thats the case, then I have a listing of whats inside that PIC 7040
/Simon
Do you still have that PIC listing available Simon?
dublevay
Posts: 175 Joined: Wed Jan 23, 2019 3:41 pm
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by dublevay » Sat Jul 01, 2023 8:29 am
rolfmichelsen wrote: ↑ Tue Mar 10, 2015 10:13 pm
It's a 2732, verified by checking that A11 from the cartridge connector is wired to pin 21 on the PROM.
-- Rolf
Any chance of a picture of the underside of the PCB, Rolf?
John
rolfmichelsen
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by rolfmichelsen » Sun Jul 02, 2023 7:38 pm
After a bit of fiddling with glue, here are the pictures.
-- Rolf
Attachments
IMG_1016.JPG (3.4 MiB) Viewed 49870 times
IMG_1015.JPG (3.48 MiB) Viewed 49870 times
robcfg
Posts: 1542 Joined: Sat Apr 04, 2009 10:16 pm
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by robcfg » Sun Jul 02, 2023 9:43 pm
Excellent!
I'll do some work on them and upload them to their rightful place
robcfg
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by robcfg » Mon Jul 03, 2023 8:04 am
Aaaaaand, done!
https://archive.worldofdragon.org/index ... _Synthesis
Can I bother you to take a picture of the component site with the socketed chips removed? That would make it easier to create a "X-Ray" composite image where all the tracks can be seen.
dublevay
Posts: 175 Joined: Wed Jan 23, 2019 3:41 pm
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by dublevay » Mon Jul 03, 2023 9:14 am
Excellent. Many thanks Rolf.
rolfmichelsen
Posts: 299 Joined: Wed Apr 08, 2009 8:43 pm
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by rolfmichelsen » Mon Jul 03, 2023 6:47 pm
Another set of picture that will hopefully satisfy everybody's curiosity... It should be possible to see most of the capacitor ratings on these two pictures, but not for the smallest ones... The transistors are BC 549Cs.
-- Rolf
Attachments
IMG_1022.JPG (2.23 MiB) Viewed 49847 times
IMG_1019.JPG (3.44 MiB) Viewed 49847 times