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by exxos
Sun Feb 24, 2019 4:45 pm
Forum: MONGREL H4 USER BUILDS
Topic: REV H1 information and interest
Replies: 123
Views: 62317

Re: REV H1 information and interest

PaulJ wrote: Sun Feb 24, 2019 4:40 pm Exxos, is there a post that talks to the changes between v2 and v3?

https://www.exxosforum.co.uk/forum/viewt ... =50#p14107

https://www.exxosforum.co.uk/forum/viewt ... 250#p14781
by exxos
Sun Feb 24, 2019 4:31 pm
Forum: MONGREL H4 USER BUILDS
Topic: REV H1 information and interest
Replies: 123
Views: 62317

Re: REV H1 information and interest

I don't remember what versions I sent out... some did the V2 but there was patches, so I did the v3 which is the design I built into the rev H1.. So it needs testing really in case something is wrong.. Otherwise there might be no video output on the H1. OK to overly simplify all this... As for "...
by exxos
Sun Feb 24, 2019 12:09 pm
Forum: HARDWARE DISCUSSIONS
Topic: phantom bus accelerator & clock patch
Replies: 12
Views: 7777

Re: phantom bus accelerator & clock patch

I would happily test it in my phantom Falcon just depending on the level of modification required. I currently have my 'home made' phantom clock patch, so it has the cut track at the sdma etc etc. If I had to repatch the trace and stuff I might not go down that route since it would require a bit to...
by exxos
Sun Feb 24, 2019 11:34 am
Forum: MONGREL H4 USER BUILDS
Topic: REV H1 information and interest
Replies: 123
Views: 62317

REV H1 information and interest

The H1 is the current board which I am looking to get made later in the year if there is enough interest.. The H1 schematic is here https://www.exxosforum.co.uk/forum/viewtopic.php?f=73&t=1475 I will update this thread with more info, I may have forgot to add things.... CHANGES: All the changes ...
by exxos
Sun Feb 24, 2019 11:10 am
Forum: HARDWARE DISCUSSIONS
Topic: phantom bus accelerator & clock patch
Replies: 12
Views: 7777

phantom bus accelerator & clock patch

I looked into my clock patch again on my second Falcon and I think I know why the phantom patch needs the second buffer chip for the SDMA. Adding loading resistors on the SDMA side only reduces the voltages and issue. A couple variants seem to divide the voltage in fact. IIRC the phantom used a real...
by exxos
Sun Feb 24, 2019 2:34 am
Forum: H4 MONGREL EDITION DEVELOPMENT & INFO
Topic: Declaring interest in REV G board ( abandoned see REV H1)
Replies: 25
Views: 13060

Re: Declaring interest in REV G board.

Cool.. Will start a new thread with a names list soon to keep track of it all..

Will try and do a proper H1 spec as well as I think its spec has got lost in multiple threads..
by exxos
Sun Feb 24, 2019 1:40 am
Forum: H4 MONGREL EDITION DEVELOPMENT & INFO
Topic: RAM change to simm ?
Replies: 18
Views: 12892

Re: RAM change to simm ?

The simm will be added to the H1 when i have chance to update the schematic. I will use the same connector as my falcon ram cards, but I need to make a proper lib for it yet.. The simm will be located under the keyboard so its out of the way.. And the falcon ram card likely removed.. Though I may le...
by exxos
Sun Feb 24, 2019 1:30 am
Forum: H4 MONGREL EDITION DEVELOPMENT & INFO
Topic: Declaring interest in REV G board ( abandoned see REV H1)
Replies: 25
Views: 13060

Re: Declaring interest in REV G board.

Exxos, little surprised here. :o :o :o Just ask this very question in the thread referenced in the html link and to my understanding you said you were restocking the store now prior to job demands occurring later this year and subsequent to the store restock and work demands you wouldn't have any a...
by exxos
Sun Feb 24, 2019 1:06 am
Forum: GENERAL FOR SALE & WANTED
Topic: FOR SALE - AMIGA 500 X2 UK
Replies: 8
Views: 6098

Re: FOR SALE - AMIGA 500 X2 UK

See the first post. They both was brought as working. I powered both up and that's all I did as in have never had time to do anything else. Been sat in the loft for years. EDIT: These have gone back up into the loft as I don't have space to keep them in my workshop anymore. May list again in the fut...

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