VOGONS


First post, by brostenen

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Just wanted to share a few pictures of my Revision 8a.1 that I have upgraded from non-Plus to Plus spec's and upgraded with a few nice additions. I initially intended to upgrade it to a beast with accelerator and stuff, but I have gotten my self an Amiga1200 instead for the times when I want to run with a faster Amiga. Basically. I got rid of the accelerator on this 500 and got my self a non tested sidecar HDD/Ram solution instead of an internal TerribleFire accelerator.

It is what it is. But yes. I upgraded this 8a.1 from normal configuration to Plus configuration. And added following upgrades to the machine:

- RGB-to-HDMI upscaler/scandoubler.
- 1mb Trapdoor Ram, that are configured as ChipRam. (2mb Chip in total now)
- Internal Gotek drive.
- Boot selector, in order to be able to boot from external floppy as it was the internal drive.
- Kickstart switcher, to have both Kickstart 1.3 and also Kickstart 3.1
- A sidecar upgrade, with CF card as HDD and then 8mb FastRam in total.

I bought the sidecar expansion a couple of months ago. Some 4/6 months or something. It was untested, and without the original PSU, manual and software. The first thing I did was cleaning it up, as it had big black cakes of dust all over. Then I power-modded the expantion in order to accept internal power from the Zorro-slot to power the HDD. Just a matter of two wires from the slot to power in (5v and 12v). Upgraded Ram from 2 to 8 and got it fully to work this way. The bad news is that I can only use CF cards. Or is it a good thing? I dont miss the noisy 100mb Seagate HDD at all, and CF cards are silent. Good thing, bad thing? I don't really know. 😁 The best part of this setup is the HDD. The Amiga is running with stock CPU, and still the HDD speed is freaking 9mb/s. 😳 The internal HDD adaptor the I have in a box somewere, gives around 700kb/s on a stock 68000 CPU.

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I like this setup. It is basic and not much super-bling or anything like that. And it is oldschool centered to what I experienced as a teenager around 1991/92'ish, when attending the local Computer Club. Basically fully retro to me personally. If I want something more in terms of Amiga, then I can always hook up my 1200 instead.

Don't eat stuff off a 15 year old never cleaned cpu cooler.
Those cakes make you sick....

My blog: http://to9xct.blogspot.dk
My YouTube: https://www.youtube.com/user/brostenen

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Reply 1 of 3, by Solo761

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I also modded my rev8.1 to A500+, but left the rest stock.

I had 8 MB ram upgrade + CF addon (A508IDE from kipper2k), but in the end I moved that to one "plain" rev5 A500 and added ACA500 + ACA1220 accelerators.

For video I made DB23 to scart cable and I have OSSC. And I have few GBS8200 boards that can be modded with GBS Control.

I also had one dead A500 motherboard that I managed to fix (broken Agnus socket and few bar ram chips). I made it into wooden Amiga. This is where that A508IDE went 😁

https://imgur.com/kBRnseI
https://imgur.com/vP88UaB

It has GBS8200 board to convert video signal to VGA, originally I made small atmega based board to take control of GBS with two settings, one for usual resolution that games used and one for workbench, that's what button on front switches between.
That was predecessor of GBS Control that we now have. In the mean time GBS Control came out and I moved to that. That's why resolution switch button is now defunct 😅.

Reply 2 of 3, by brostenen

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Solo761 wrote on 2022-10-17, 13:37:
I also modded my rev8.1 to A500+, but left the rest stock. […]
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I also modded my rev8.1 to A500+, but left the rest stock.

I had 8 MB ram upgrade + CF addon (A508IDE from kipper2k), but in the end I moved that to one "plain" rev5 A500 and added ACA500 + ACA1220 accelerators.

For video I made DB23 to scart cable and I have OSSC. And I have few GBS8200 boards that can be modded with GBS Control.

I also had one dead A500 motherboard that I managed to fix (broken Agnus socket and few bar ram chips). I made it into wooden Amiga. This is where that A508IDE went 😁

https://imgur.com/kBRnseI
https://imgur.com/vP88UaB

It has GBS8200 board to convert video signal to VGA, originally I made small atmega based board to take control of GBS with two settings, one for usual resolution that games used and one for workbench, that's what button on front switches between.
That was predecessor of GBS Control that we now have. In the mean time GBS Control came out and I moved to that. That's why resolution switch button is now defunct 😅.

That is a nice and wonderfull alternative case you have installed the board in. I did something along those lines as well, but used an old Unisys case for mine.

This one here...

Don't eat stuff off a 15 year old never cleaned cpu cooler.
Those cakes make you sick....

My blog: http://to9xct.blogspot.dk
My YouTube: https://www.youtube.com/user/brostenen

001100 010010 011110 100001 101101 110011

Reply 3 of 3, by Solo761

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It was easier to make that one out of wood than finding desktop case to mod 😅