Search found 505 matches

by rpineau
Wed Apr 18, 2018 5:43 pm
Forum: Hardware
Topic: Mega STe PSU replacement with Flex ATX
Replies: 12
Views: 576

Re: Mega STe PSU replacement with Flex ATX

I used a PicoPSU ( picoPSU-120 ) and a small PCB with a ATX connector on it and a 7905 to generate the -5V. Works fine with my TT. I even put a connector for the fan and reused the original PSU enclosure. I'll see if I can take a few picture if interested. I think there is a thread on the forum some...
by rpineau
Wed Jan 31, 2018 1:12 am
Forum: Chat forum [ENG]
Topic: CPU/Processor Upgrade for the Atart ST
Replies: 59
Views: 4149

Re: CPU/Processor Upgrade for the Atart ST

it was probably old sock or refurbished cpu as the 68030 (and EC) have been retired and out of production since end of 1998 for the RC package (official last ship date from Motorola/Freescale/NXP ), 2001 for the RP package
by rpineau
Tue Jan 30, 2018 9:02 pm
Forum: Chat forum [ENG]
Topic: CPU/Processor Upgrade for the Atart ST
Replies: 59
Views: 4149

Re: CPU/Processor Upgrade for the Atart ST

I also wonder if anyone has designed a modern accelerator based around the 25MHz 68EC030 seeing as they still make them and they're available cheaply. Are you sure about this as I haven't found any source for 68030 or 68EC030. NXP marked all of these as no longer manufactured. If you have a source ...
by rpineau
Wed Jan 24, 2018 3:09 pm
Forum: Hardware
Topic: 68020 booster
Replies: 142
Views: 42772

Re: 68020 booster

Thanks. We're still working on it.
by rpineau
Fri Sep 15, 2017 11:20 pm
Forum: Hades / Milan
Topic: My Milan custom case
Replies: 6
Views: 1180

Re: My Milan custom case

Neat !
by rpineau
Mon Sep 04, 2017 3:01 am
Forum: Professionals
Topic: Falcon Afterburner - Please Help!
Replies: 157
Views: 36392

Re: Falcon Afterburner - Please Help!

LOL
by rpineau
Mon Sep 04, 2017 2:04 am
Forum: Professionals
Topic: Falcon Afterburner - Please Help!
Replies: 157
Views: 36392

Re: Falcon Afterburner - Please Help!

Nice !
by rpineau
Mon Sep 04, 2017 12:56 am
Forum: Professionals
Topic: Falcon Afterburner - Please Help!
Replies: 157
Views: 36392

Re: Falcon Afterburner - Please Help!

Ok.
Let us know all your findings :)
I might pull the AB040 from storage and put it back in my Falcon and apply all the fix you'll find .
I assume you're documenting all of this and will release all your findings at some point ?
by rpineau
Sun Sep 03, 2017 11:13 pm
Forum: Professionals
Topic: Falcon Afterburner - Please Help!
Replies: 157
Views: 36392

Re: Falcon Afterburner - Please Help!

Do you mean a 68060 on the AB040 ? I started to make an adapter but I haven't had time to test the new version I made of the PCB. There might be some timing issues and software isssues to. My adapter is based on the 68060 databook and some schematics for the Milan 68060 adapter. One day I'll have ti...
by rpineau
Mon Aug 28, 2017 6:40 pm
Forum: Professionals
Topic: Falcon Afterburner - Please Help!
Replies: 157
Views: 36392

Re: Falcon Afterburner - Please Help!

Ok, let us know. My AB040 is in a box right now but will go back in the Falcon in the next few month once I can re-install all my Atari stuff (everything is in boxes as we're doing some construction on the house). As for the sky .. I was in Oregon last week for the eclipse and indeed the sky looked ...
by rpineau
Mon Aug 28, 2017 5:52 pm
Forum: Professionals
Topic: Falcon Afterburner - Please Help!
Replies: 157
Views: 36392

Re: Falcon Afterburner - Please Help!

If you overclock it to high you will feed the BCLCK with 62MHz and the 88915 which then double it to feed the PCLK. I'm fairly sure the 88915 can't support these speeds. My AB040 never worked properly at 50MHz, was somewhat ok at 40MHz and very stable at 32MHz I know that not all AB040 were equal (m...
by rpineau
Tue Aug 01, 2017 1:25 am
Forum: Professionals
Topic: ED (2.88mb) Floppy Upgrade for Falcon
Replies: 40
Views: 4623

Re: ED (2.88mb) Floppy Upgrade for Falcon

The 32 MHz goes to the DSP pin 74 (named EXTAL) and DMA pin 10 (named DSP_32_I with a signal named DSP_32M going to it). When you overclock the DSP, you cut the 32MHz line between the oscillator and the DSP, then wire a new oscillator (50MHz) directly to the DSP, leaving the 32MHz to DMA untouched s...
by rpineau
Sat Jun 24, 2017 8:07 am
Forum: News & Announcements
Topic: Ataribox
Replies: 12
Views: 4711

Re: Ataribox

Use google.. it's good.. you'll see ...
https://www.polygon.com/e3/2017/6/16/15 ... ew-console
by rpineau
Fri Jun 23, 2017 9:42 pm
Forum: News & Announcements
Topic: Ataribox
Replies: 12
Views: 4711

Re: Ataribox

PC based hardware ... . . . . .
by rpineau
Wed Jun 07, 2017 3:41 pm
Forum: Hardware
Topic: 68020 booster
Replies: 142
Views: 42772

Re: 68020 booster

We're in the process of ordering the new revision of the pcb for our V3 proto which if everything goes well will become the final version (we will remove the test headers for the final version but that's about it). We don't intend to sale it but to make all files available as an open source project ...
by rpineau
Wed May 31, 2017 3:37 am
Forum: News & Announcements
Topic: SLCC - San Lenadro Computer Club Meeting SF-Bay Area
Replies: 3
Views: 1614

Re: SLCC - San Lenadro Computer Club Meeting SF-Bay Area

Argg.. I won't be able to make this time. I didn't even know about you guys.
I'll try to plan for the July meeting (it's just 30mn from my place).
I might bring a few proto of the 68020 card to show around (I might even have time to fix them and bring the MSTE with a card in it).
Regards, Rodolphe
by rpineau
Fri May 26, 2017 6:19 am
Forum: Hardware
Topic: TT and MSTe PSU
Replies: 28
Views: 3360

Re: TT and MSTe PSU

The -5V is used by the DAC0802 in the Mega STE and TT. It might be used in other places.
by rpineau
Tue May 23, 2017 12:59 am
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

Agreed .. the FPGA still used an external ram in which it "copies" the full 4MB STRAM while snooping so that it can then render from it (aka similar to what supervidel is doing, except it only snoop whatever it needs from the screen video start address + size of a frame). There are many wa...
by rpineau
Mon May 22, 2017 9:25 pm
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

Both the VA2000 (Amiga) and the VBXE (8 bit Atari) have their own RAM onboard.
by rpineau
Mon May 22, 2017 9:21 pm
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

Any "video card" we build will not access the ST RAM. It will have its own RAM. Having the GPU (Epson, FGPA, ...) drive its own ram is the best way to get fast video with a higher resolution. Making something that access the ST RAM would require it to interface between the GLUE/MMU and RAM...
by rpineau
Mon May 22, 2017 5:06 pm
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

Yes the chip has a dedicated SDRAM (or EDO DRAM) for the video frame buffer and other feature (sprites ...) and depending on the chip this RAM is more or less big :) The epson chip are cheap (around $20 to $30 max), but they do not have any video mode compatible with Falcon or ST 4/8 interleaved pla...
by rpineau
Mon May 22, 2017 4:44 pm
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

Yes, the chip requires external RAM for the video and other function (1 chip of 16 bit SDRAM, 8 or 16 MB for the QFP package, 8/16/32 or 64MB for the PBGA package). The IC should be fully accessible at 32MHz and if you copy data from ram to its SDRAM (not accessible as is, only via the chip) it woul...
by rpineau
Mon May 22, 2017 4:13 pm
Forum: News & Announcements
Topic: GEMBENCH 6
Replies: 114
Views: 28702

Re: GEMBENCH 6

The 68030 cache is controlled by software, So you can totally de-activate it on the TT (and any 68030 machine).
Rodolphe
by rpineau
Mon May 22, 2017 4:10 pm
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

For the FPGA, I do know some VHDL as we're doing the code for the CPLD we use on the 68020 card using VHDL. I read his code (and talked to him and his totally fine with us using his code for an open source video card for Atari computers) and it's fairly simple. We'll probably still need a small CPLD...
by rpineau
Mon May 22, 2017 12:02 am
Forum: Hardware
Topic: STE BOOSTER V1 32MHZ & FAST-TOS
Replies: 199
Views: 33205

Re: STE BOOSTER V1 32MHZ & FAST-TOS

The Epson chip is not bad, but it's not the fastest thing on the planet :) I have an Eagle design for 68020 bus with it (as the plan is to make one for our cards) but the S1D13506 also has a 68000 bus mode so it could be adapted easily from my schematics. Also the "don't use in new projects&quo...

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