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General Category => Technical support - Hardware related => Topic started by: Grega on 04:39, 03 December 17

Title: Amstrad CPC6128 --> Commodore 1084P
Post by: Grega on 04:39, 03 December 17
Howdy


I picked up a C6128 yesterday from a lovely old techo guy ; with a heap of extremely useful information. However rather than a SCART connection on the back of my 1084P I only have a 6 pin and 8 pin DIN. Last evening I put together a 6 pin to 6 pin cable based on pin mappings ;

While I get a display and everything appears fine ; the minute I issue a 'cat' to A (or B) the screen blurs and shifts to the left and becomes garbled ;


These are the pin mappings I used.
Amstrad --> 1084P
1 R --> 4 R
2 G --> 1 G
3 B --> 5 B
5 GND --> 3 GND
4 Sync --> 6 VSYNC
6 Comp/LUM --> 2 HSYNC


Any ideas as to where I have fallen here? I do apologise if this has been answered but I can't seem to find where. I could also be missing something obvious.

The 1084P
Pin 1: Green
Pin 2: Horizontal Sync
Pin 3: Ground
Pin 4: Red
Pin 5: Blue
Pin 6: Vertical Sync

The C6128
Pin No.Signal NameDescription
1RRed analogue signal
2GGreen analogue signal
3BBlue analogue signal
4SyncRGB switching control
5GNDCommon
6LUMLuminance







Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: pelrun on 05:36, 03 December 17
Try disconnecting the LUM signal and connect Sync from the 6128 to the HSync on the 1084. Leave the VSync input disconnected.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Grega on 08:18, 03 December 17
thank you very much pelrun, that works absolutely perfectly :D


So ; Amstrad --> 1084P monitor


Pin 1 - Pin 4
Pin 2 - Pin 1
Pin 3 - Pin 5
Pin 4 - Pin 2
Pin 5 - Pin 3
Pin 6 - NC


Thanks HEAPS!
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: 00WReX on 08:43, 03 December 17
And for the Commodore 1084S-P1 that has the 9-Pin RGB connector.

AMSTRAD    ==>  1084 9-Pin

1 - RED      ==>  3 - RED
2 - GREEN  ==>  4 - GREEN
3 - BLUE    ==>  5 - BLUE
4 - SYNC    ==>  7 - CSYNC
5 - GND      ==>  2 - GND

Cheers,
Shane
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Grega on 09:21, 03 December 17
ripper shane. i don't have one of those in my collection just yet ;)
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Gryzor on 15:12, 06 December 17
Does the P1 have anything special? I guess it's a [P]hilips one, but apart from that...?


For anyone out there who can't/won't build their own cables, I know you can get some on eBay...
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Bryce on 15:22, 06 December 17
The P is for Philips, the 1 means it has the 9pin Sub-D connector instead of 6/8 pin DIN sockets. It supports exactly the same formats as the P version. I think the P2 was a costdown which removed features.

Bryce.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Gryzor on 15:25, 06 December 17
Which ones are those with the Green option again, then?
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Bryce on 15:30, 06 December 17
Quote from: Gryzor on 15:25, 06 December 17
Which ones are those with the Green option again, then?

Here: https://gona.mactar.hu/Commodore/monitor/Commodore_monitors_by_model_number.html

Bryce.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Gryzor on 15:32, 06 December 17
Ah yes, *that* site :D


But it doesn't list the Green option... or am I missing something?
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Bryce on 15:34, 06 December 17
You haven't gone far enough to the right. You possibly mean the 1701?

Bryce.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Gryzor on 15:37, 06 December 17
Where on the 1701 (Jesus those tables...) does it say about the Green option?


But no, mine is a 1084S-D(2??) I think, definitely not a 1701.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Bryce on 15:54, 06 December 17
Ah, green option, I thought you meant monochrome. Not sure the "green-switch" is reflected in the model number.

Bryce.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Gryzor on 16:03, 06 December 17
Ah, I see; I thought the green option was restricted to specific models, though I haven't seen concrete information on that.
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: 00WReX on 23:06, 06 December 17
The P1 has the button on the front to toggle between colour or green screen.


Cheers,
Shane
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: 00WReX on 11:10, 08 December 17
I had the Commodore monitor hooked up today so grabbed a couple of pictures.
The pictures don't do it justice, the screen is very sharp, and the green screen mode with 80 column is very sharp.

Cheers,
Shane

[attach=2][attach=3][attach=4]
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Gryzor on 11:21, 08 December 17
Indeed. It's like a really good CPC monitor :)
Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: geeb on 02:04, 11 December 17
Quote from: Bryce on 15:30, 06 December 17
Here: https://gona.mactar.hu/Commodore/monitor/Commodore_monitors_by_model_number.html (https://gona.mactar.hu/Commodore/monitor/Commodore_monitors_by_model_number.html)

Bryce.

Doesn't appear to have a picture of my Type DM602 unless the image is trapped on the page

http://www.scuzzscink.com/amiga/a_scuzz_jun12/a_scuzz_jun12_02.jpg

http://www.scuzzscink.com/amiga/amiga_scuzz17.htm

I am assuming you all use a different power supply for the 12V with the 6128

http://www.scuzzscink.com/amiga/scuzzblog_december17/scuzzblogddecember17_0302.htm

I prefer my Microvitecs for the Amigas. On the C64 I use the ....

http://www.scuzzscink.com/amiga/a_scuzz_nov20/a_scuzz_nov21_18.jpg

Hadn't thought about the Amstrads... though I have enough CTM644s plus three or four green screens [size=-2]GT65s thinks the name.

[ By the way wasn't Bryce the kid with the parrot in the Max Headroom C4 film ]

Big Time ... "All day every day, making tomorrow seem like yesterday." . Classic

scuzz
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Title: Re: Amstrad CPC6128 --> Commodore 1084P
Post by: Bryce on 08:42, 11 December 17
Quote from: geeb on 02:04, 11 December 17

[ By the way wasn't Bryce the kid with the parrot in the Max Headroom C4 film ]

Big Time ... "All day every day, making tomorrow seem like yesterday." . Classic

scuzz


Yup, that's where the username comes from. But from the series, not the film. :)

Bryce.
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