Latest October 11,2010

Last year, I purchased a ROM adaptor from a Amibay member DJ Base. It is a very nice and slick unit that I will get to installing one of these days (yet ANOTHER unfinished project).

I came across an artical on a DIY A1000 ROM adaptor by a member of the German A1K boards named RATTE, which in turn was based off a project in some German magazine long ago. If anyone knows more about the origins, E-mail me and I will give proper credit.

The following is translated from the original German

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The first part shows the BootROM adapter solution.
Known from the Amiga magazine and the reworking AmigaFuture1000 and his buddy.

Actually, everything penny / dime items.

100 nF capacitor = 0.14 €

Euro board 160 x 100 = 2.35 €

IC socket 40 pole = 0.52 €

Enamelled copper wire = 3.10 €

2 x 32 pin contact strip precision = 3.54 euros per

For the 2-pin connector (for motherboard) you can also use the remains of a contact strip or you take a
8-pin male connector = 0.29 €

For the two additional connections to the motherboard is still a 2-pin connector with wire = 1.55 € needed.

Adds up to about 15, - € (for a single piece).

An existing ROM (256/512kB) is of course a requirement for the board

Are required width = 32/34 rows of holes / Height 16 rows of holes

Remove excess copper ...

2 bars and 2 bars a 14-pin solder a 12 pin.
In addition, the IC socket and still the capacitor and the connector.

Magnet wire prepared me had about 50 pieces (including spare) ready cm with a length of about 8.
Now, every contact of the IC socket prepare a piece of wire ...
(Believe it or not, here is after most of the work already done!)

Now just connect the respective wires with the right connections, and remove excess coating wire.


Looks wild, is very easy .. makes even this much fun!
The description of the circuit can be found later in a separate entry.

You can extract the installation of these pages, please:
Kick board / Amiga Magazine
Rework of AmigaFuture1000
Do not even one more time will be described .. 'm too lazy.
Especially the version of AF1000 read, so that the conversion can make less "destructive".

Magnet wire is NEN horny stuff ...

Next is the test run and then comes the (Part 2) CPU-socket solution of Ralf.

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Wiring of the adapter ROM (BootROM version):

Wiring Example
ROM R 1 / 06 => L3 / 04
means:

ROM number 1, contact No. 6 combine with
Bar 3, contact No. 4 ... makiert RED in the example.

And there you go ...

ROM R 1 / 01 => ROM R1 / 11
ROM R 1 / 02 => L3 / 02
ROM R 1 / 03 => L1 / 02
ROM R 1 / 04 => L3 / 03
ROM R 1 / 05 => L1 / 03
ROM R 1 / 06 => L3 / 04
ROM R 1 / 07 => L1 / 04
ROM R 1 / 08 => L3 / 05
ROM R 1 / 09 => L1 / 05
ROM R 1 / 10 => L2 / 01
ROM R 1 / 11 => L3 / 14
ROM R 1 / 12 => L3 / 06
ROM R 1 / 13 => L4 / 14
ROM R 1 / 14 => L3 / 13
ROM R 1 / 15 => L1 / 12
ROM R 1 / 16 => L4 / 13
ROM R 1 / 17 => L1 / 09
ROM R 1 / 18 => L1 / 07
ROM R 1 / 19 => L1 / 10
ROM R 1 / 20 => L1 / 11

It should look like this:

and continues ...

ROM R 2 / 01 => L1 / 01
ROM R 2 / 02 => L3 / 01
ROM R 2 / 03 => L2 / 02
ROM R 2 / 04 => L4 / 02
ROM R 2 / 05 => L2 / 03
ROM R 2 / 06 => L4 / 03
ROM R 2 / 07 => L2 / 04
ROM R 2 / 08 => L4 / 04
ROM R 2 / 09 => S1
ROM R 2 / 10 => ROM R1 / 10
ROM R 2 / 11 => L4 / 01
ROM R 2 / 12 => L4 / 05
ROM R 2 / 13 => L4 / 06
ROM R 2 / 14 => L4 / 07
ROM R 2 / 15 => L4 / 08
ROM R 2 / 16 => L4 / 09
ROM R 2 / 17 => L4 / 10
ROM R 2 / 18 => L4 / 11
ROM R 2 / 19 => L4 / 12
ROM R 2 / 20 => S2

Additional Wiring:
ROM R 1 / 11 => K1
K2 => L4 / 01
K2 => ROM R2 / 10

Pin assignment:
S1 (male) = A18 - Address management
S2 (male) = ROM select line

Done!

Liability for damage to your hardware?
As always .. assume, of course not!

Have fun tinkering!