I would give anything to be able to run Sparemint on my STacy. That needs a lot of alt-ram.
CURRENT PROTOTYPE STATUS (SEC 64MHz 68000)
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Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
It will have alt-ram at least next design, likely flash and fast-rom.. though flash software will be something someone else may have to code else I will be spending months on it myself otherwise.Atarian Computing wrote: ↑Sat Jul 21, 2018 4:36 pm I would give anything to be able to run Sparemint on my STacy. That needs a lot of alt-ram.
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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.
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.
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS
This would be a great upgrade for my Mega ST2. I have a Marpet 8 MB board for it, but it's not usable without TOS 2.06.
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
No updates to report yet
But now I have had but experiences with the level translators, and is going to continue this design with 5V stuff. You will take a fair while just to get the regular ROM connected up and working. But if doing the new board, I would want to put fast ram on there as well..
Though back to the point that the SRAM is about £10 per MB. This will give up to 50MHz fast-ram speeds. There are of course the maximum would generally be 8MB (£80) though I have suggested 10MB or 12MB before, but I think there was some problem with possible conflict with external graphics RAM or something..
So I will probably add on space for 8 chips for now.. Then they can be populated in 1MB steps. Likely I would only fit 1MB for testing purposes anyway. Cheaper to kill 1 chip than 8
Really I just want to discontinue the V2.2 booster, and get this current design and running as it is the V2.2's successor. Of course I want to not just ramp up the speed, but add the new to it like the long-awaited fast ram. I have of course considered adding flash ROM, and and even IDE, but each new feature could take several months to test and debug individually. The trying to bring up everything on one card at once, is not really realistic to do.
Of course this project has been on hold for some months again, but I hope in the New Year I can spend bit more time on this again. Of course wiring up ROM & RAM really only comes down to PCB routing time. There is the firmware as well, but that should really be pretty simple to do as well.
Incidentally I do actually have 2 of the SEC prototypes somewhere which if anyone wants to purchase one, I will try and find them flash the firmware into them.. It is just the 50MHz CPU running... Benchmarks here... https://www.exxosforum.co.uk/forum/viewt ... =160#p6266 Not terribly exciting to say the least...
But now I have had but experiences with the level translators, and is going to continue this design with 5V stuff. You will take a fair while just to get the regular ROM connected up and working. But if doing the new board, I would want to put fast ram on there as well..
Though back to the point that the SRAM is about £10 per MB. This will give up to 50MHz fast-ram speeds. There are of course the maximum would generally be 8MB (£80) though I have suggested 10MB or 12MB before, but I think there was some problem with possible conflict with external graphics RAM or something..
So I will probably add on space for 8 chips for now.. Then they can be populated in 1MB steps. Likely I would only fit 1MB for testing purposes anyway. Cheaper to kill 1 chip than 8
Really I just want to discontinue the V2.2 booster, and get this current design and running as it is the V2.2's successor. Of course I want to not just ramp up the speed, but add the new to it like the long-awaited fast ram. I have of course considered adding flash ROM, and and even IDE, but each new feature could take several months to test and debug individually. The trying to bring up everything on one card at once, is not really realistic to do.
Of course this project has been on hold for some months again, but I hope in the New Year I can spend bit more time on this again. Of course wiring up ROM & RAM really only comes down to PCB routing time. There is the firmware as well, but that should really be pretty simple to do as well.
Incidentally I do actually have 2 of the SEC prototypes somewhere which if anyone wants to purchase one, I will try and find them flash the firmware into them.. It is just the 50MHz CPU running... Benchmarks here... https://www.exxosforum.co.uk/forum/viewt ... =160#p6266 Not terribly exciting to say the least...
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.
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.
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Exxos does it have the decode TOS 2.06 does it run reliably..?
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
You mean the current SEC booster ? There is no ROM yet.. that comes next...
The current boards look like this...
https://www.exxosforum.co.uk/forum/viewt ... =110#p5938
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.
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.
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Small progress...
Schematic updated, removed the flash (was 3.3v stuff!) and added the fast-ram. Seems I probably only need 4 chips for 8 MB...
Added in the normal PLCC44 ROM...
This is all I am doing with this booster.. but that is enough to keep me busy for some time yet...
Schematic updated, removed the flash (was 3.3v stuff!) and added the fast-ram. Seems I probably only need 4 chips for 8 MB...
Added in the normal PLCC44 ROM...
This is all I am doing with this booster.. but that is enough to keep me busy for some time yet...
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.
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.
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
I don't see the SRAM[1..4] signals on the CPLD
Working ones : MegaSTE (68020) / TT030 / Falcon with AB040 & Eclipse / 1040STF
Need testing : Falcon with CT2
Need testing : Falcon with CT2
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
Well spotted!
I need to work out what is the best pins for routing them to the PLD yet though.. There is no ROM_OE pin yet either.
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.
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.
Re: V2.5 BOOSTER CURRENT PROTOTYPE STATUS (SEC BOOSTER)
You have ROM_OE on pin 29
Working ones : MegaSTE (68020) / TT030 / Falcon with AB040 & Eclipse / 1040STF
Need testing : Falcon with CT2
Need testing : Falcon with CT2