Stupid question about A4000 keyboards

[orange]

There were some differences in reset signal between various Amigas, sorry can't remember exactly which now.

[Jope]

orange wrote:
There were some differences in reset signal between various Amigas, sorry can't remember exactly which now.

Big box Amigas handle the reset on the motherboard, the A500 handles reset in the keyboard itself.

You can convert an A500 keyboard to big box by removing transistor Q1. And vice versa, of course, if you happen to have the right kind of big box kbd. There are many revisions.

[Jope]

PMC wrote:
Pleeeeeeeeeaaaaaaaaasssssssseeeeeeee can we have a pic?

Pretty please?

:-)

That's impossible! ;-)

Perhaps this is the one?

[Martyn]

purKKi wrote:
So what kind of keyboard I can connect to my Amiga CD32? Amiga 4000 keyboard?

As someone mentioned, the CD32 keyboard port (labelled 'aux') is the same as the A4000 port (desktop at least - never had a 4000T).

I haven't actually plugged mine in to test it yet though, the CD32's a new purchase.

Martyn.

[Jope]

As someone mentioned, the CD32 keyboard port (labelled 'aux') is the same as the A4000 port (desktop at least - never had a 4000T).

The T has a 5-pin DIN like the a2k/3k

[Martyn]

Jope wrote:

As someone mentioned, the CD32 keyboard port (labelled 'aux') is the same as the A4000 port (desktop at least - never had a 4000T).

The T has a 5-pin DIN like the a2k/3k

I wonder why?  The 4000T was an AT machine wasn't it?  Maybe that's got something to do with it.

Were there any CBM models released?  I seem to recall there was going to be one before The End???

[Jope]

Jope wrote:
The T has a 5-pin DIN like the a2k/3k

I wonder why?  The 4000T was an AT machine wasn't it?  Maybe that's got something to do with it.

AT as in Amiga Technologies or fitting a PC/AT case?

C= made them too, but not many. Amiga Techonologies made more.

I'd say it's because of the PC/AT compatible case.. AT motherboards used the 5-pin DIN too.

[x56h34]

Yep, they wanted to be fully compatible with the "standard" AT motherboard layout/dimensions. There are rumors that the case used for A4000T in the Escom days was actually originally a PC case which was "good enough" for the A4000T motherboard to fit in, with enough clearance space for the CPU board(s), as the 3.5" internal drive bay is ALWAYS in the way and needs to be sort of "specially" placed in order not to hit the CPU card.

[Martyn]

I was thinking Amiga Technologies, I figured CBM didn't bother using AT standard ports for other amigas (the 4000D for example - despite being in a PC case itself).

Are there many differences between the CBM & AT versions?  I never seen that many pics of the 4kT.

[x56h34]

The A4KT motherboard is the same in C= and Escom units. Escom only made the ports modules themselves, IIRC. With Escom A4KT, you can tell this by looking at the writing on the motherboard (Commodore logo is present) and the ports modules (Amiga Technologies copyright). So originally, it was C= who decided on the AT form factor for the A4KT, and after producing about 200-300 units they went bankrupt, and Escom simply bought out the remaining stock of the parts, blank PCBs, and complete motherboards, and re-sold them in their own flavor.

[Iggy_Drougge]

x56h34 wrote:
There are rumors that the case used for A4000T in the Escom days was actually originally a PC case which was "good enough" for the A4000T motherboard to fit in

I can substantiate that rumour. There was a 486 PC with the same case as the AT A4000T lying around in an electronics shop here in Stockholm a few years ago. If it weren't for the price, I'd have bought it for fitting my A4000D into.