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Re: Recreating the DragonPlus Board
Posted: Sat Feb 20, 2016 12:13 pm
by fbnbmns
Fabian, welcome to the forums! What a beautiful project!
Thank you, tormod!
Do you have the original board, or are you basing it on the photos in the wiki?
It's based on the photos in the wiki.
You could use the black and white layouts to make a PCB, but the traces look ugly
So i started a new layout with 45° and 90°-like traces.
What do you use for layouting?
For layouting i use Sprint Layout by Abacom, a German software.
At the moment i check every single pad, if it's connected correctly (yes, 1187 pads.
)
i will upload a new version next week, at the moment i'm with my girlfriend
Re: Recreating the DragonPlus Board
Posted: Wed Feb 24, 2016 8:18 pm
by fbnbmns
I've created the fist BOM!!
for the 4 most important suppliers: Reichelt, Farnell, Mouser and TME.eu.
Have a look and correct me if there are any mistakes.
BTW, i have a nother question: Could you substitute the 2764 with the new 28C64 from Atmel?
Re: Recreating the DragonPlus Board
Posted: Wed Feb 24, 2016 8:38 pm
by robcfg
Nice!
Theoretically, yes, you could use a 28C64 in place of a 2764.
Cheers,
Rob
Re: Recreating the DragonPlus Board
Posted: Mon Feb 29, 2016 10:58 pm
by pser1
Hi Fabian,
I have been looking for parts to be used for the ICs that in your worksheet are marked as 'not available'
These are the products and prices from UT-Source for them:
Code: Select all
IC1 SAM 6883 use the one inside the Dragon 64
IC2 ROM/BASIC use the one inside the Dragon 64
IC3 4864/4164 150 nS UT-Source: MN4164P-15A at $1.33 (NMOS 65,536 X 1 BIT DYNAMIC RAM)
IC4 4864/4164 150 nS alt UT-Source: KM4164B-15 at $2.00 (64K X 1 BIT DYNAMIC RAM WITH PAGE MODE)
IC5 4864/4164 150 nS alt UT-Source: HM4864P-2 at $3,33 (x1 Page Mode DRAM)
IC6 4864/4164 150 nS alt UT-Source: MK4864N-120 at $5.33
IC7 4864/4164 150 nS
IC8 4864/4164 150 nS
IC9 4864/4164 150 nS
IC10 4864/4164 150 nS
IC12 N82S147N UT-Source: N82S147 at $7.50 (4K-BIT TTL BIPOLAR PROM)
IC19 HM6116LP-3 UT-Source at $3.33
IC24 6845 UT-Source: MC6845P at $6.00 (or HD6845SP at $6.67)
Just in case you end up with a functional board, I think we should be able to find all of the needed components
cheers
pere
Re: Recreating the DragonPlus Board
Posted: Tue Mar 22, 2016 5:50 pm
by pser1
Hello Fabian,
do you need someone's help to verify anything?
I would like to hear more about that thread, so if I could help pushing it a bit, I would do with pleasure.
Just let me know.
cheers
pere
Re: Recreating the DragonPlus Board
Posted: Wed Mar 30, 2016 6:12 pm
by fbnbmns
hi,
at the moment it's a little messy..private problems and school, but i still have the project going..
maybe in the next two weeks i can make a prototype board.
and then maybe someone would like to test it?
would be nice.
so long,
fabian.
Re: Recreating the DragonPlus Board
Posted: Wed Mar 30, 2016 6:31 pm
by pser1
Hello Fabian,
according to Compusense documentation it could be used in a D32 or a D64.
So I could use a D32 to test it, no problem.
In fact I would like to have one .... the one I had back in the eigthies was lost
when moving to Barcelona. It went to relatives and then who knows!
cheers
pere
Re: Recreating the DragonPlus Board
Posted: Fri Jul 15, 2016 6:13 pm
by pser1
Hi Fabian,
have you planned any task for this project along next holidays?
In case you need anything that could be done by any of us, just let us know.
I would like to help push this nice project!
cheers
pere
Re: Recreating the DragonPlus Board
Posted: Tue Oct 25, 2016 12:28 pm
by fbnbmns
Hi, i'm back.
But unfortunately i think i lost the PCB files..
so i have to do it again, but i will restart this project!
Stay tuned!
Re: Recreating the DragonPlus Board
Posted: Tue Oct 25, 2016 2:58 pm
by pser1
Hi Fabian,
wow, this hurts!
I am sorry for that.
Count on me if I could be of help at any point of the project
cheers
pere