68EC020 TK - new A500/A1000/A2000 accelerator by Matze

24.04.2020 Update!
New Batch arrived! Offering here 10x 68EC020TK Cards
New updated revision with DIP switches,
switching between 28Mhz / 35Mhz
reguires no soldering now to change frequency.

:smile:feel free to place Your orders :smile:

Important NOTE!
There will be a commercial offer of these cards at some point,
will inform here as soon as i know more about price and site...
Thank You very much for Your support!


Hello dear Amigan's

:grouphug:

some of You already know me as 8 Bit Dreams
i'm a retro computer enthusiast who spends his time by repair and building open-source retro computer related hardware
for a big range of home computers, making them more powerful and comfortable to use.
generally i do it for my personal use, however, i do like retro related forums like A1k, Exxos, EAB, & Amibay, and want to support them somehow.

decided to offer small batches of hardware i am able to build, and sell them to the people without or with limited soldering skills.
With this move i can shoot two rabbits with one shot:
more happy retro computer users, and a possibility to donate some cash to support our forums
- i think that's great!

This time offer an 68EC020 TK - an accelerator card designed by Matthias Heinrichs (Matze)
This accelerator was designed for all 68k CPU based Amiga computers like A500 /A1000 /A2000

CPU: Motorolla 68EC020 running @28Mhz /35Mhz

FPU: NO
IDE: Yes, powered (Pin20 provides power to CF / DOM modules)

DMA Support: Yes
MapROM:Yes

RAM: 11MB (4 Memory profiles)
8MB + 1,5MB Ranger + 1.5MB A0-B8 +ROM-Overlay (Total 11MB+1.5Mb FakeROM)
6MB + 1,5MB Ranger + 1.5MB A0-B8 +ROM-Overlay (Total 9MB+1.5Mb FakeROM)
8MB only
Nomem

Attachment 137391 Attachment 137334 Attachment 137335 Attachment 137336


As You see this card isn't fastest one, it also hasn't FPU, yet it beats A2630 accelerator with 030 CPU easily!
This accelerator is also friendly to a big range other hardware due DMA support.
it's a perfect expansion for playing WHDLoad games, or even build an expanded Amiga with RTG Grapic card,
offering correct quit function and enough memory for even advanced games. All in all great hardware!

Matze has opened he’s accelerator card sources – everyone is welcome to build these cards.
All information about can be found on Gitlab. It’s free for non-commercial purposes.

Update from 24.04.2020
have limited order of 10 cards in total, offering these for sale as I don’t need all of them, just one or maybe two..
This revision has DIP switch to choose between 28 and 35Mhz (some cards from last batch was not happy on 35Mhz) so now You can lower the frequency if You run into stability issues

Currently available: 10 cards



1. Cards are offered as is, or in sets with all necessary - relocator boards, CF adaptor, and IDE extension included
2. i am responsible for the card i have built, will try to help solving issues if You have any,
however, You need to understand that this is pure hobby project, rather than a ready to use commercial product with warranty and full support, hence support i can offer is limited by my full time work and family

Asking 125€ for accelerator only,
or 140€ for accelerator + relocator, CF Card adapter and ribbon cable extension.

A2000 version with CPU Slot card (additional IDE, Clockport) will change the owner for 145€

PayPal as a friend/family or add 4% to cover fees
Also IBAN payment is accepted

Postage fees from 01.01.2020 are
8.50€ to any country (tracked & insured) (5,00€ for Germany)
Best regards,

- 8 Bit Dreams

21.05.2020 Update
here is some interesting information i'd like to share:
as You may know, i've assumed that not all cpu's i've used are working stable @35Mhz as some WHDLoad games crashed,
had time to make a deeper investigation - it turned out that all cards are whorking just fine @35Mhz, the issue why some WHDLoad is crashing is SlowRAM!!! seems some games doesn't expect to see expanded Fast + Slow RAM at same time..
Close MEM1 Jumper - to disable SlowRAM, and

to Update Your card to 35Mhz:
1. remove R4 resistor and place it on R12
2. flash a new firmware (see first post in this thread, or on Gitlab)
3. Close MEM1 Jumper - to disable SlowRAM - now You should be able to start any WHDLoad game without issues

Declare interest. PM sent.

Quote:

---

Originally Posted by OXCOM

Declare interest. PM sent.

---

PM was answered, pending payment

Declare interest

- - - Updated - - -

PM sent

Hi, declaring interest, pending infos in PM

PM's repied to:
MalleB
Epongette withdrawn his interest

Declare interest

I am interested. PM sent. Thank you!

Payment sent.

Added mari83pl and finrock to waitlist, will contact you as soon as your card is ready for shipping.
Kind regards,
Viktor

Interested - what time frame are we talking before shipping to the UK? TIA!

Declaring interest in one A2000 version for CPU Slot. Do you have a picture of this version?

added
Retroheaven87
and
demolition
to queue, four boards left!


- - - - Update - - - -

PM with payment detais sent to user
MalleB

Item received in perfect working order. Thanks very much.
Feedback left.

Positive feedback's exchanged with user OXCOM
Payment received from user MalleB, will update tracking info as soon as parcel gets sent.

About A2000 relocator - it was presented in the 030 accelerator thread, here is another picture of the card:
Attachment 137587

Quote:

---

Originally Posted by DjCook

About A2000 relocator - it was presented in the 030 accelerator thread

---

Okay thanks, I wasn't sure whether it was a special A2000 version or if it used this relocator like the 030 version. Still interested. :)

Actually You can use TF530/Vampire CPU Slot adapter too, it fits perfectly, so no problems here ;)
Attachment 137589

Declare interest, pm sent

Added arxxxx to the queue.
Parcel for MalleB sent Tracking info in PM

All cards are sold out (some of them outside Amibay)
More 68EC020TK cards soon from authorised official vendor.
Thanks to all persons supported my retro passion and Amibay!
With kind regards,

-Viktor

Quote:

---

Originally Posted by DjCook

All cards are sold out (some of them outside Amibay)
More 68EC020TK cards soon from authorised official vendor.

---

Does this mean that you will not supply any more cards at all and all future purchases will have to be done through a vendor?
I would like to know whether I should start looking for something elsewhere, or if I can still expect to get something from you at some point.

Quote:

---

Originally Posted by demolition

Quote:

---

Originally Posted by DjCook

All cards are sold out (some of them outside Amibay)
More 68EC020TK cards soon from authorised official vendor.

---

Does this mean that you will not supply any more cards at all and all future purchases will have to be done through a vendor?
I would like to know whether I should start looking for something elsewhere, or if I can still expect to get something from you at some point.

---

You will get Your board soon, You are in queue already, have built three boards and started fourth now. So all persons already declared interest here - will get accelerator from me.

This is generally with all products designed by Matthias - there is a clear statement on the boards that these are NOT for commercial reproduction, so making countless batches and selling them is NOT allowed. I'm respecting these rules because i really like his quality works, also don't want to make someone angry, cause this will end at the point we all already know - there will be no open source projects anymore, and i don't really want that happens.

As about this particular 68EC020TK accelerator -Matze kindly allowed me to sell LIMITED batch (10 cadrs in total) of these cards to the persons without soldering skills, if i take responsibility for the cards i am building. He will run automatic assembly of these boards at some point, and sell them with warranty. I think these are excellent news, indeed!
don't know the homepage, nor prices yet, as far i get more info - i will post info here, so persons interested in these cards be able to get them and tune up their Migas!
with respect and best wishes from Germany-

Viktor

Item received. Working great. Thanks a lot.

Interested

No answer from mari83pl,
So adding Hiddenevil instread

Woohoo!, sent a PM

next card is built and fully tested, payment info sent to Retroheaven87

Interested, in accelerator, plus cf adapter, etc.

Thanks!

Declaring interest with shipping to Germany

Kind regards

Hello

Just wondering if I can boot from Kick1.3 with this card?

Regards
Tommy

no answer from Retroheaven87 for more than 48 hours, added Franktho instread

PM sent-
thanks!

Quote:

---

Originally Posted by TommyE

Hello

Just wondering if I can boot from Kick1.3 with this card?

Regards
Tommy

---

Sure, You can, however your CF should be formatted with OFS, as wb 1.3 do not understand Fast File System, and is unable to operate disks formatted with FFS
Also 3.1 library contains more updates and can operate with more colors

Hi

Can I have 8MB + 1,5MB Ranger + 1.5MB A0-B8 +ROM-Overlay (Total 11MB+1.5Mb FakeROM)

Please send PM when ready. I dont log into Amibay everyday so please wait if I dont reply immediately

I am interested. PM sent. Thank you!
Ich habe Ihnen "Victor" eine Nachricht geschrieben ich will eine haben für meinen Amiga 1000

Declare interest.

Edit - Actually I've just realized a conflict. I will need to withdraw. Apologies.

Dear Amigans,

This was small LIMITED batch of 10 cards only!

Last 68EC020TK Card was sold at 25.07.2018!

There will be a commercial offer of these cards at some point,
will inform here as soon as i know more about price and site...
Thank You very much for Your support!

PS
Payment received from Finrock
will update tracking info once parcel is sent
kind regards,

Viktor

Does it have maprom functionality?

Quote:

---

Originally Posted by Patrikax

Does it have maprom functionality?

---

There is no such jumper (tool) by default, but it doesn't mean You can't use this feature.
in my opinion with this amount of memory You can sacrifice 512kb

Received my board this weekend, have not tested (and will not be able to for some time), but will report back when I do. Thank you very much for the great board and excellent communication!

Are they still availible

Quote:

---

Originally Posted by calkster

Are they still availible

---

http://www.amibay.com/showthread.php...l=1#post906019

payment sent

confirm payment received from arxxxx
will update tracking info once parcel is sent

Payment received from Hiddenevil
Parcels for arxxxx and Hiddenevil was sent, tracking info is in the PM

Card delivered today.
Tested on A2000.
Everything OK.
Great Job!!
Positive feedback sent.

Thanks

Hello,
a small update for A2000 users:
Few users have noticed minor issues on A2000, and Matze has explained why:
Here is his explanation:
"The Problem lies on the Commodore-PCB:

https://www.a1k.org/forum/attachment...1&d=1536570209

On the A2000 (top) Commodore added a capacitor for noise filtering on the E-Clock

On the A500 (bottom) Commodore added a Resistor on SOME A500-boards for noise filtering.

So on the A500 the resistor on my TK board (R19) adds up to the onboard-resistor, which is generally no problem. On A500 with no resistor (rev5) it fixes this issue (which was also a stability-issue) tackled by Commodore via the onboard-resistor and runs smoothly.

But on the A2000 my resistor becomes a RC-delay filter, which delays the Eclock and confuses the CIAs. I think I have to install a A2000-Jumper to bridge R19 if needed..."
So in other words, for those who has an issue on A2k - just replace R19 resistor with 0Ohm one, or put a solder blob on it, it will fix this issue!
Happy hacking!

Viktor

next card is built, payment info sent to demolition
started to build last card (for user Franktho)

Payment sent.

Quote:

---

Originally Posted by demolition

Payment sent.

---

Payment received from users demolition and Franktho
will update tracking info once parcels are sent

Parcel (1x 68EC020TK for A2000 with CoPro board) sent to user demolition
tracking info updated via PM