Search found 455 matches

by rpineau
Mon Feb 20, 2017 4:26 am
Forum: Hardware
Topic: Overall strategy for hardware mods, upgrades, clones
Replies: 31
Views: 947

Re: Overall strategy for hardware mods, upgrades, clones

PCI "bridges" like the one on the CT-PCI are still available (PLX PCI 9054 is about $75 on mouser and probably around the same price in other online reseller). Most of these require a full 32 bit address and data (like the expansion port on the CT60/63/60e or the one we're putting on our 6...
by rpineau
Sat Feb 18, 2017 5:47 pm
Forum: Hardware
Topic: Overall strategy for hardware mods, upgrades, clones
Replies: 31
Views: 947

Re: Overall strategy for hardware mods, upgrades, clones

double post.. deleted.
by rpineau
Sat Feb 18, 2017 5:47 pm
Forum: Hardware
Topic: Overall strategy for hardware mods, upgrades, clones
Replies: 31
Views: 947

Re: Overall strategy for hardware mods, upgrades, clones

Thank for the update Vincent. As for the ET4000, it's always hard to find one and they are going to become impossible to find, Add to this that not all are compatible depending on the DAC they use. The new chip I'm looking at is not the most powerful thing in the video world, but has a direct 68000 ...
by rpineau
Sat Feb 18, 2017 3:53 am
Forum: Hardware
Topic: Overall strategy for hardware mods, upgrades, clones
Replies: 31
Views: 947

Re: Overall strategy for hardware mods, upgrades, clones

Latest fvdi source update was r483 from Johan in svn. The github page is also not showing much update (https://github.com/jklockars/fVDI_from_0.958/tree/master/fvdi ). latest log is from "Thu Jan 24 11:46:17 2013" Vicent Riviere has a fork (https://github.com/vinriviere/fvdi ) which seem t...
by rpineau
Fri Feb 17, 2017 5:37 pm
Forum: Hardware
Topic: Overall strategy for hardware mods, upgrades, clones
Replies: 31
Views: 947

Re: Overall strategy for hardware mods, upgrades, clones

@Joska,I agree that the megabus is great for 68000 machine. But it's fairly limiting for machine that have faster CPU and can use 32 bits data bus and faster clock. This is why I "create" the current expansion bus on our 68020 card so that new card can be 16 or 32 bits (the video controlle...
by rpineau
Fri Feb 17, 2017 5:17 pm
Forum: Hardware
Topic: Overall strategy for hardware mods, upgrades, clones
Replies: 31
Views: 947

Re: Overall strategy for hardware mods, upgrades, clones

So, interesting indeed. For the expansion port, this is highly dependent on the CPU. On the 68000 booster that Chris does, we put all the 68000 signals. On the 68020 booster me and Juliusz are doing, we put all the 68020 signals and even added the 68030 ones for the future. But if you develop a card...
by rpineau
Thu Feb 16, 2017 12:45 am
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

so the connector above are not easy to find so we've also ordered some APM G832MB011206222HR and G832MB111205222HR receptacle and plugs and we're going to check the mechanical strength (these are also 120 pins so it's a direct mapping from one to the other for me in Eagle). We'll keep you posted on ...
by rpineau
Tue Feb 14, 2017 5:58 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

So after looking at a better connector solution, we're going to take a look at the Hirose FX2-120P-1.27SV and FX2-120S-1.27SV receptacle and connector. I'll order a set and will take some measurements. This doesn't mean we'll be able to put any and all cards in the STE, but if we put the connector a...
by rpineau
Tue Feb 14, 2017 5:55 pm
Forum: Hardware
Topic: TT030 vs Boosted Mega STe?
Replies: 18
Views: 673

Re: TT030 vs Boosted Mega STe?

good question.
I have a TT, first gen with the 32MHz daughter board (2MB of STRAM and 16MB of TTRAM) so I could run Gembench and compare with the MSTE and the 68020@32MHz in it.
As for the FPU on the MSTE you need an extra PAL (or GAL) for it in the empty dil socket next to the FPU socket.
Rodolphe
by rpineau
Fri Feb 10, 2017 1:21 am
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

I'm not sure I want to run wire for the signals.. actually I'm fairly sure I don't want to do that to the outside of the machine. The signals in a ST are already not clean (as opposed to the signal on the CT-PCI) so this would create more problems than we want to deal with. We'll keep thinking about...
by rpineau
Thu Feb 09, 2017 5:53 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

It could but a ribbon cable is not the best for signals quality. But I can think about it.
You still need to find some space for it in the machine, but I'm open to suggestions
by rpineau
Thu Feb 09, 2017 5:37 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

I haven't even started on the board layout for STF, We'll probably do the Mega ST version before the STF. For the STF, the space, as you said, is even less that in the STE, so I'm not yet sure how it's going to fit. And for it to fit it'll have to be this mother board model : http://www.atari-wiki.c...
by rpineau
Wed Feb 08, 2017 4:06 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

Yes this only affect the MSTE.
by rpineau
Tue Feb 07, 2017 6:33 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

Now for the next question(s) :) As we plan on having add-on cards, these card could potentially need to trigger some interrupt. On the STF, Mega ST and STE, IPL5 is available. But on the MSTE it's used by the SCC (Z85C30). So my idea is to use the VHDL code from Suska for the MFP 68901 to manage int...
by rpineau
Mon Feb 06, 2017 5:07 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

Not installing the bottom connector is a good option as this means no changes in code or PCB for us.
by rpineau
Sun Feb 05, 2017 7:51 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

Hi everyone. We now have some very stable working code and we've been testing this for the last 2 weeks and it's very stable. The same code run on the STE and MegaSTE which is a good thing. We're now facing the mechanical issue of fitting the card in a STE and closing it.. as we have an expansion po...
by rpineau
Tue Jan 31, 2017 7:55 pm
Forum: Hardware
Topic: VME VGA interface
Replies: 3
Views: 223

Re: VME VGA interface

This is a CompactPCI card .. so not compatible with any Atari as is. You would need to have a CPLD or PCI controller to interface it to the 680x0 bus ot VME bis, and then write the drivers (could use fVDI).
by rpineau
Sun Jan 29, 2017 1:46 am
Forum: Professionals
Topic: Why so hard to de-solder some parts?
Replies: 7
Views: 317

Re: Why so hard to de-solder some parts?

This is probably happening on pins connected to the ground plane. It takes a lot more heat to keep the tin melted on these pins as most of the heat get dissipated by the ground plane copper.
Rodolphe
by rpineau
Tue Jan 24, 2017 5:43 pm
Forum: CosmosEx
Topic: CosmosEX mini?
Replies: 9
Views: 704

Re: CosmosEX mini?

what about using a SCSI-2 connector, they are smaller :
http://www.retrotechnology.com/herbs_st ... drives.jpg

Rodolphe
by rpineau
Sat Jan 21, 2017 7:19 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

Diode can probably work (if the polarity is correct). I just prefer to use proper logic gate for this.
by rpineau
Sat Jan 21, 2017 6:28 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

STERM is from the card to the CPU. As the 68020 doesnt have STERM you need to use the STERM from the card to generate DSACK0 and DSACK1.
Diodes are probably not going to work here. Also the generated DSACKx need to go tri-state when STERM is HI.
by rpineau
Sat Jan 21, 2017 5:07 pm
Forum: Hardware
Topic: 68020 booster
Replies: 133
Views: 27874

Re: 68020 booster

FastRam will be a separate card that goes on the expansion port.
by rpineau
Sat Jan 14, 2017 4:22 am
Forum: Hardware
Topic: Anyone recognizes this type harddisk?
Replies: 30
Views: 1306

Re: Anyone recognizes this type harddisk?

this link was just for reference of what to look for (ebay, ....)
by rpineau
Fri Jan 13, 2017 10:07 pm
Forum: Hardware
Topic: Anyone recognizes this type harddisk?
Replies: 30
Views: 1306

Re: Anyone recognizes this type harddisk?

It's a SCSI drive. You would need a ASCI to SCSI Adapter (ICD or other). Or if you have a Falcon or TT .. a SCSI cable

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