H5A Phoenix Platform Edition - A platform for the future

Information and progress towards the H5 board.
User avatar
Icky
Site Admin
Site Admin
Posts: 3986
Joined: Sun Sep 03, 2017 10:57 am
Location: UK

Re: H5A Phoenix Platform Edition - A platform for the future

Post by Icky »

:logo:- 3V3 BUS more details

Here is a more detailed view of the 3V3 bus. We are still working on this area so things may change.

The reasoning behind the bus is to future proof designing add-on boards by saving on adding 3V3 to 5V translators onto these boards. In effect an add-on board to the Phoenix platform using 3V3 technology will not require these translators enabling us to fit more onto these boards and use cheaper 3V3 chips.

The 3V3 bus has two 64 DIL sockets which have all the lines in the 68000 placement but at 3V3 levels. In addition there are two pins used by Flashy Clock - CPU Reset and AUX ROM Drive at the top-middle of the socket and further more 8x IO lines at the right hand side of the socket. These lines currently have 3V3 to 5V translators and end up on the IO1-8 jumper the right of the 3V3 bus area. As we identify more lines to add to the bus we will route to these spare line. We expect there to be some spare so if there is any need to send a line down to the sockets it will be available.

Screenshot 2020-06-10 at 14.03.19.png
Screenshot 2020-06-10 at 14.03.19.png (704.77 KiB) Viewed 3864 times
WiseGreasyBastard
Posts: 30
Joined: Wed Jun 03, 2020 12:41 am

Re: H5A Phoenix Platform Edition - A platform for the future

Post by WiseGreasyBastard »

Will this (or a future revision) evolve into something with an ATX/ITX form factor?
Something in a PC case with a processor riser and VME or IO risers would be nice to play with.

WGB
User avatar
exxos
Site Admin
Site Admin
Posts: 23499
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: H5A Phoenix Platform Edition - A platform for the future

Post by exxos »

WiseGreasyBastard wrote: Wed Jun 17, 2020 9:16 pm Will this (or a future revision) evolve into something with an ATX/ITX form factor?
Something in a PC case with a processor riser and VME or IO risers would be nice to play with.
*could* yes, but only when we have a final design finished with all the addons done. This will take some years to complete before considering other form factors.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
terriblefire
Moderator Team
Moderator Team
Posts: 5368
Joined: Mon Aug 28, 2017 10:56 pm
Location: Glasgow, UK

Re: H5A Phoenix Platform Edition - A platform for the future

Post by terriblefire »

So whats left to do before we get a new PCB? :)

EDIT: Also is there any appetite for the TF536 to be integrated in to the H6 when it appears? I know some purists dont want the 030 but i just want to know what the appetite would be.
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
WiseGreasyBastard
Posts: 30
Joined: Wed Jun 03, 2020 12:41 am

Re: H5A Phoenix Platform Edition - A platform for the future

Post by WiseGreasyBastard »

terriblefire wrote: Thu Jun 18, 2020 12:12 am So whats left to do before we get a new PCB? :)

EDIT: Also is there any appetite for the TF536 to be integrated in to the H6 when it appears? I know some purists dont want the 030 but i just want to know what the appetite would be.
This is the reason i'd like to see a processor riser. Unplug default processor card and insert upgrade X. I know nothing of the big box amiga pinouts, but if that processor card interface could be replicated you get two birds with one stone.
User avatar
exxos
Site Admin
Site Admin
Posts: 23499
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: H5A Phoenix Platform Edition - A platform for the future

Post by exxos »

WiseGreasyBastard wrote: Thu Jun 18, 2020 12:38 am This is the reason i'd like to see a processor riser. Unplug default processor card and insert upgrade X. I know nothing of the big box amiga pinouts, but if that processor card interface could be replicated you get two birds with one stone.
You can do this already with the H4. Remove the cpu and plug in a TF536 like others have done.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
terriblefire
Moderator Team
Moderator Team
Posts: 5368
Joined: Mon Aug 28, 2017 10:56 pm
Location: Glasgow, UK

Re: H5A Phoenix Platform Edition - A platform for the future

Post by terriblefire »

exxos wrote: Thu Jun 18, 2020 12:51 am You can do this already with the H4. Remove the cpu and plug in a TF536 like others have done.
Agreed. My question was that if everyone is already going to grab a TF536 and put them in these boards then its probably worth integrating... its not like it would be lots of work.
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
WiseGreasyBastard
Posts: 30
Joined: Wed Jun 03, 2020 12:41 am

Re: H5A Phoenix Platform Edition - A platform for the future

Post by WiseGreasyBastard »

exxos wrote: Thu Jun 18, 2020 12:51 am You can do this already with the H4. Remove the cpu and plug in a TF536 like others have done.
You stuck with 24 bit address with a 68k socket. Designing in a processor card bus would allow for full 32 bit and other I/O without additional jumper wires.
User avatar
exxos
Site Admin
Site Admin
Posts: 23499
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: H5A Phoenix Platform Edition - A platform for the future

Post by exxos »

terriblefire wrote: Thu Jun 18, 2020 12:12 am So whats left to do before we get a new PCB? :)

EDIT: Also is there any appetite for the TF536 to be integrated in to the H6 when it appears? I know some purists dont want the 030 but i just want to know what the appetite would be.
It would be nice to have a dual CPU setup like a 50mhz 68000 & 030 built on at some point. Though I'm reluctant to start bolting piles of hardware on the board anytime soon. When the thing doesn't boot, its best to have a simple stock machine to diagnose faults on. If stuff can be unplugged it makes life easier to diagnose whats faulty. It also gives the users a option to configure what addons they want or can afford rather than forcing a all bells and whistles machine which nobody can afford or diagnose easily.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
User avatar
exxos
Site Admin
Site Admin
Posts: 23499
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: H5A Phoenix Platform Edition - A platform for the future

Post by exxos »

WiseGreasyBastard wrote: Thu Jun 18, 2020 12:57 am
exxos wrote: Thu Jun 18, 2020 12:51 am You can do this already with the H4. Remove the cpu and plug in a TF536 like others have done.
You stuck with 24 bit address with a 68k socket. Designing in a processor card bus would allow for full 32 bit and other I/O without additional jumper wires.
Only the CPU can use 32bit address, so 24bit on the sockets is irrelevant,
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
Post Reply

Return to “H5 Phoenix Platform Edition”