A500/600 Dual Kickstart Switcher - Assembled or Parts Kit

Designed for A2000 (Rev 6), A500 (Rev 6+) and A600.
Long reset (C-A-A) of 4 seconds or longer switches the Kickstart image.

The switch board sticks to the back of a 27C800 or 27C160 EPROM containing the multiple ROM images. I have available for sale:
1. Fully assembled & programmed (with your supplied ROM images!) - £10
2. Parts kits (PCB + components)
a. with no ROM - £2
b. with blank 27C160 ROM to program yourself - £3.50
c. with programmed 27C160 ROM (you must supply the ROM images to burn!) - £4

Postage for up to 5 items: £2 in the UK; £4 Worldwide. Tracked & insured is extra.

Attachment 106521

Assembly/installation instructions here: https://github.com/keirf/PCB-Project...cher/README.md
Assembly of kit requires moderate soldering expertise. The kits are cheap practice however. :lol:
For the fully assembled switcher you need to hook onto the reset line, either with a probe clip (pictured above) or by soldering (required on A600).

I understand it's for newer motherboards and won't work on a rev.4 Amiga 2000A (the one designed in Germany and based on the A1000), correct?

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Originally Posted by xyzzy

I understand it's for newer motherboards and won't work on a rev.4 Amiga 2000A (the one designed in Germany and based on the A1000), correct?

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Yes, 2000A puts A18 on pin 31. So it's not suitable pin-out for 27C400/800/160 range of EPROM. Any Amiga that takes an EPROM without wiring bodges will take this switcher.

Hi, interested pending questions, will PM.

Sent from my Harrier from EE using Tapatalk

Hi Keir,

I'm interested in 3 kits " c. with programmed ROM - £4" I will PM you about payment etc.

Interested in the £10 pre-built PM sent.

Sent from my Harrier from EE using Tapatalk

How many kickstart images can you put on this

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Originally Posted by scoobyatgb

How many kickstart images can you put on this

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Two images. It's a two-way switcher. Each image could be up to 1MB if using a 27C160 EPROM.

Could you make one too do three kickstart images

Notice that you cannot sell programmed ROMs here due to copyright. If you flash the EPROM with an image supplied by the buyer, then that may be ok.

Payment sent.

Sent from my Harrier from EE using Tapatalk

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Originally Posted by Keir

programmed EPROM

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sorry not allowed on Amibay,

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Originally Posted by Sardine

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Originally Posted by Keir

programmed EPROM

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sorry not allowed on Amibay,

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Apologies, I have amended the advert and hope it now complies.

I just wanted to add, that I have purchased 3 of these kits from Keir (prior to him advertising them on here) and they are extremely good quality, very small form factor. They work really well (I have one in my CDTV already).

interested in one, pre-assembled one, if that's ok...

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Originally Posted by RighteousMan5

interested in one, pre-assembled one, if that's ok...

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Messaged you.

Allen1, Robofruit: Your items are in 1st class post today.

HI
I am interested in one too

Would it work on a2000 rev6 ?

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Originally Posted by Keir

Allen1, Robofruit: Your items are in 1st class post today.

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I missed this message somehow but I seen it when I came to say that the package has arrived today safe and sound :thumbsup:

I would like to assemble them as soon as possible but unfortunately there are some things that need doing before I get round to these :(
Nice professional looking circuit board, it should be fun soldering the parts on them :)

Thanks for the quick dispatch and for such a good quality product :thumbsup:

Declare interest in two please.

Sending PM.

Declaring interest in one fully assembled if it works on A2000 rev6

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Originally Posted by A2666

Declaring interest in one fully assembled if it works on A2000 rev6

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Yes the A2000 rev6 should certainly work fine. They have the required updated wiring for the ROM socket.
I have updated the original post to include A2000 rev6 support.

Hi!
Im intrested in one fully assembled for my CDTV.
Sending you a PM.

Geir Ove

Payment done.

Geir Ove

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Originally Posted by Keir

Allen1, Robofruit: Your items are in 1st class post today.

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Item arrived, many thanks !

Sent from my Harrier from EE using Tapatalk

Payment Sent

Cheers

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Originally Posted by Avinitlarge

Payment Sent

Cheers

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Your kit is in 2nd class post today.

I'm interested in acquiring 2 kits... will send you a PM. Cheers!

Will this definitely not work on a Rev5 A500 ?

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Originally Posted by UberFreak

Will this definitely not work on a Rev5 A500 ?

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The wiring on the mainboard socket is a little different, so it wouldn't work without modifying the mainboard or lifting more pins on the ROM and possibly introducing a second socket. It's a bit of a pain but doable for someone who is assembling from a kit. I'm not offering it assembled because of the extra bother and I do not have a rev5 board to test against.

I think it may be easier (only needing one extra jumper wire on the ROM) with a 27C322 chip, but I can't program them yet.

Interest withdrawn

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Originally Posted by Keir

Quote:

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Originally Posted by A2666

Declaring interest in one fully assembled if it works on A2000 rev6

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Yes the A2000 rev6 should certainly work fine. They have the required updated wiring for the ROM socket.
I have updated the original post to include A2000 rev6 support.

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Then definitely I need one. Please let me know where to send payment.

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Originally Posted by A2666

Quote:

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Originally Posted by Keir

Quote:

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Originally Posted by A2666

Declaring interest in one fully assembled if it works on A2000 rev6

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Yes the A2000 rev6 should certainly work fine. They have the required updated wiring for the ROM socket.
I have updated the original post to include A2000 rev6 support.

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Then definitely I need one. Please let me know where to send payment.

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Messaged you.

- - - Updated - - -

gounderset, benmatthew, limboy77: Your items are in the post.

Received today in kit form for added fun. Nice piece of kit and cheap too.

Quote:

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Originally Posted by A2666

Quote:

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Originally Posted by Keir

Quote:

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Originally Posted by A2666

Declaring interest in one fully assembled if it works on A2000 rev6

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Yes the A2000 rev6 should certainly work fine. They have the required updated wiring for the ROM socket.
I have updated the original post to include A2000 rev6 support.

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Then definitely I need one. Please let me know where to send payment.

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A2666: your switcher is in the post today.

Payment sent. Kits received (super fast) and feedback left. Thanks!

Switch arrived. All well. Positive feedback left.

Geir Ove

sfs

Declaring interest - sent PM. thanks!

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Originally Posted by eebuckeye

Declaring interest - sent PM. thanks!

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Replied.

Declaring interest in 4 kits, sending PM

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Originally Posted by cyberhead97

Declaring interest in 4 kits, sending PM

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Replied. Need clarifying whether you want EPROMs included or not.

Interested in five kits, including blank ROMs. Shipping to the USA please. PM to follow.

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Originally Posted by rootboy

Interested in five kits, including blank ROMs. Shipping to the USA please. PM to follow.

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Replied with quote.

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Originally Posted by Keir

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Originally Posted by eebuckeye

Declaring interest - sent PM. thanks!

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Replied.

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eebuckeye's adapter is in the post today.

Money sent!

PM replied, payment sent for 4 kits without roms

rootboy, cyberhead97: your kits are in the post today.
rootboy: I will send you a message with your tracking code.

Interested in one fully assembled for a CDTV - Sending PM