New yerar, new CPC board

Piotr · 15:27, 14 February 15

Case for this board, similiar like this (for my expansion card for ZX Spectrum) 2 Plexi boards, top and bottom.

radu14m · 18:54, 14 February 15

Great Work Piotr !!!!

TotO · 23:41, 14 February 15

I don't understand why peoples said that a RTC will be not compatible with the X-MEM???
They don't use the same address port... I have made RTC tests w/o problem.

gerald · 11:10, 15 February 15

Quote from: Munchausen on 13:00, 14 February 15
As discussed in another thread, the "standard" RTC is not compatible with X-MEM, MegaROM, SF2 etc. Also, it is not currently supported by SymbOS. The other option is a SF2 compatible version, but this requires more implementation work as it is not ROM based AFAIK.

That other thread is : Real Time Clock Board
But no one said this is the "standard" RTC.

Quote from: TotO on 23:41, 14 February 15
I don't understand why peoples said that a RTC will be not compatible with the X-MEM???
They don't use the same address port... I have made RTC tests w/o problem.

There are many different RTC solutions for the CPC. The mentioned thread covers the Dobbertin smart watch, which takes place in a ROM slot, and unless you put it in a ROM slot not covered by the XMEM/SF2/Megaflash/MegaROM, there will be a conflict.

Now it would be better to discuss this on the other thread

Piotr · 22:49, 15 February 15

DIY Amstrad, DIY case

Munchausen · 22:50, 15 February 15

Quote from: gerald on 11:10, 15 February 15
That other thread is : Real Time Clock Board
But no one said this is the "standard" RTC.There are many different RTC solutions for the CPC. The mentioned thread covers the Dobbertin smart watch, which takes place in a ROM slot, and unless you put it in a ROM slot not covered by the XMEM/SF2/Megaflash/MegaROM, there will be a conflict.

Now it would be better to discuss this on the other thread

Sure it's not exactly standard because there isn't a standard, hence putting it in quotes. But it seems to be the most common one until the SF2 appeared on the scene.

Munchausen · 22:52, 15 February 15

Quote from: TotO on 23:41, 14 February 15
I don't understand why peoples said that a RTC will be not compatible with the X-MEM???
They don't use the same address port... I have made RTC tests w/o problem.

Only the dobbertin smart watch RTC... not the SF2!

Piotr · 00:06, 16 February 15

Ok some calculation, board price (if i order minimum 20) cost is approx 25 EURO. So question is who really want this?

From Scratch, working

Amstrad CPC 6128 clone, demo "From Scratch" - YouTube

Joseman · 00:20, 16 February 15

the final version will have the FDC on board as you said in the last modification?

Piotr · 00:47, 16 February 15

Yes, FDC, 128 ram , ps2 keyboard/mouse ,one or two slot for mx board .

Joseman · 01:24, 16 February 15

3 for me please

Cpcmaniaco · 01:42, 16 February 15

1 for me please, Thanks.

radu14m · 06:35, 16 February 15

One cpc for me please

jrodriguezv · 06:55, 16 February 15

Another one for me, please

Munchausen · 09:26, 16 February 15

AMAZING!! I'll take 3 please

Piotr · 09:45, 16 February 15

Board dimension , 24x15 cm

First routing so is only for imagine how it looks.

One slot for mx cards, i do a separate board with slots.

Joseman · 09:58, 16 February 15

@Piotr Where will be located the mounting holes?

If you accept advices, there are a lot of lovely itx cases where this board can be mounted!. So only 4 holes in the correct situation and nothing more!

Mini-ITX - Wikipedia, the free encyclopedia

kawickboy · 10:00, 16 February 15

it sounds great.
i'd like to order 2 motherboards please.

Piotr · 10:04, 16 February 15

Joseman i draw it to catch dimension for board estimate, all is flexible. ITX size, power connector for atx supply , power button, reset but what about edge slots?

Joseman · 10:20, 16 February 15

The dimensions are flexible on an itx-case, i mean, it's not necessary to be 17x17 (with the cpc components it's impossible), your dimensions are correct.

In case that you put on an itx-case, the edge slots must be used with an scsi cable and locate the boards on anoter location (i made this way on my cpc-at) so no problem.

About puting the atx connector on the board... i don't think that it's absolutely necessary, i made the atx connections using a little board next to the cpc. And i don't think that all the people will put this board on a pc case.

Maybe the people can give his opinions about this?

Jungsi · 10:30, 16 February 15

I'll take also one!

Piotr · 10:34, 16 February 15

Hmm, now this board takes 1 amp with DDI-connected so good power supply is important, i working on it anway. ATX power as option (extra socket) plus small circut to ATX style power on/off.

Maybe somebody have try to build first version? I have 4 spare board,
Things to correct on prototype board for 464:
reverse power supply for memory chips,
4 lines for memory need swap
clock generator need change for 74hcu04.

Munchausen · 10:56, 16 February 15

I'd be happy to try building your first version

I have an original DDI and both your remakes (small and large) so testing disks shouldn't be a problem either

Cpcmaniaco · 11:19, 16 February 15

I want 1 spare board of the first versión.

TotO · 13:07, 16 February 15

Quote from: Piotr on 00:06, 16 February 15
Ok some calculation, board price (if i order minimum 20) cost is approx 25 EURO. So question is who really want this?

I imagine that you are speaking about the PCB alone, and not the mounted CPC board?
Because, when I see peoples wanting 2 or 3 of them, I have a doubt about what they order and the final price.

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New yerar, new CPC board