Icky's H4 Mongrel edition build x 2

[PaulJ]

Icky, question for you or @exxos . I have the clock chip... does some version of TOS reconize it and use its time? If so I'll give it a try. Thanks Paul.

[exxos]

Don't think so.. You need software to use it.

[Icky]

@PaulJ - I have tested it out and it works. Just use this software https://www.exxosforum.co.uk/forum/viewt ... fmc#p19107

[PaulJ]

Thanks @Icky . :)

[Icky]

Going to swap the 75R on the RGB over to 100R to see if that makes a difference in the video. Need to do the RS232 patch and then also look at why UltraSATAN is not working.

[Icky]

So its not the buffer as I just jumped over it for the ACSI lines and the UltraSATAN is still not recognised. Looking deeper now to see if there is something wrong pin or track wise.

[exxos]

So its not the buffer as I just jumped over it for the ACSI lines and the UltraSATAN is still not recognised. Looking deeper now to see if there is something wrong pin or track wise.

Did you jumper IC5 & IC6 ? I keep checking the thing and can't see anything wrong anywhere.. will keep looking.

[Icky]

@exxos - Only jumpered the ACSI buffer as that is no different than the ALPHA with the buffer board. Will try both later though.

I have been through the schematic and board layouts on the ALPHA and H4 and cant see anything different other than the buffers, HDRQ and DRQ going through an LS06 now but there is a pull up. Lastly the HDINT is a NOT on the ALPHA but a NAND wired as a NOT.

Thats the only differences I can see but shouldn't cause this to not work.

[exxos]

@Icky I did rename FDCS to HDCS but traced it around and nothing different. I can't see anything wrong anywhere. Can only assume there's a bad solder job somewhere causing it all.

[Icky]

@Icky I did rename FDCS to HDCS but traced it around and nothing different. I can't see anything wrong anywhere. Can only assume there's a bad solder job somewhere causing it all.

If there's a bad solder job to be found its probably mine. :)

Il'll go over the board again.