A3000 restoration

[shakesc]

Hello from a new old boy

I was pretty much a Beeb man originally but decided to try a A3000 off the usual auction site

Pretty pleased with it in that the dreaded battery wasnt in too bad shape. I have replaced that with the CR2032 style one off the Amiga site that someone had recommended. This is a nice little package and avoids regularly desoldering to replace. All good so far

It has the original OS (3.0?) and boots to a screen like this


I dont have a mouse yet and looking to get an adapter

I've bought what should be OS 3.11 ROMS. I fitted them, moved LK20
I only get the blue / red screen flashing and nothing else
Tried Delete power on, no joy

Put the old ROMs back and and it boots back to the previous screen (In case it helps I havent yet plugged the floppy back in)

I did a quick bus of the CMOS chip and OV and 5V seem good

Grateful for any thoughts

[IanS]

That is RISC OS 2.

I think you need to change more than just LK20, check page 28 - http://chrisacorns.computinghistory.org ... ctions.pdf

The floppy can be useful, as it may blink an error code if some other problem is found.

[shakesc]

Thanks

missed moving one of the links, now boots to RISCOS 3

Onwards to the mouse

[shakesc]

Just wondered if anyone had tried these

MKIV Amiga USB mouse adapter RIGHT MOUSE BUTTON FIX
eBay item number:121715285463

Looks like it should just convert the protocol to USB

I was looking at adding a header for an Amiga mouse similar to the article https://www.thefuturewas8bit.com/acorn_ ... conversion

This feels like a neat way of going USB

[aotta]

Amiga and Atari have different pinout than Archi's one... you should by a smallymouse2 adapter, or make one yourself..
Personally, i made my mouse adapter for the A3000 with an arduino nano and porting smallymouse2 code. If you are interested and like soldering cable, i can share the .ino files.

[shakesc]

that sounds good
I have a few nano's knocking around and happy to take a run with the soldering iron

[aotta]

that sounds good
I have a few nano's knocking around and happy to take a run with the soldering iron

So attached the sketch for Smallymouse in Arduino (one or nano).
For pinouts (4 wires in ps2 mouse, 9 wires in Archi side) you can refere to comments inside ino files, and have a look to this 2 rilevant topics:
viewtopic.php?f=3&t=13180
viewtopic.php?f=16&t=9334

Some tips: for Archi cable, i bought a couple of Genesis2 9 pin minidin... from China with couple of pounds.
And for usb mouse, i use the famous green PS2toUSB adapter, you'll find it easy and cheap.

Good soldering

[shakesc]

thanks

just waiting for my connectors etc to arrive and will give it a go