+mytek Posted March 23, 2016 Share Posted March 23, 2016 In general, you have to drop into 6502 mode if the s/w is using illegal op-codes, or linear memory is enabled and the code wraps memory ($FFFF->$0000) with an indexed instruction. By 6502 mode, I mean back to a real 6502, not the 6502 emulator mode of the 65816. Neither of these are accelerator issues - they fail at any speed. I'm just guessing here, but my experience with accelerated systems is that you won't see much/any improvement when: - you are running from a slow device like a cart or OSROM - the s/w is synced to the VBI Bob Hi Bob So I take it this is very similar to your XL14. As such, what off-the-shelf software sees a big speed-up? For instance if I wrote a Basic program and didn't have any timing tied to the VB, would this be much faster? Or would it take a Basic written to specifically take advantage of the 65816 and linear memory? Or am I just plain stupid when it comes to figuring out what this thing will exactly do for someone Please anyone out there feel free to post a link to a full description - Michael Quote Link to comment Share on other sites More sharing options...
danwinslow Posted March 23, 2016 Share Posted March 23, 2016 Which makes sense, non-tv synced speedups would render a lot of games unplayable, a-la the old 'turbo mode' issue back in early dos days. I bet there is a selection of well-written software in which you'd see speedups, stuff like The Last Word, assemblers/compilers, BASICS, other utilities, and games. DOS itself might speed up for all I know. Giant RAMDisks also come to mind. But really the point of this hardware is expansion, not enhancement, at least for me. Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 23, 2016 Share Posted March 23, 2016 I bet there is a selection of well-written software in which you'd see speedups, stuff like The Last Word, assemblers/compilers, BASICS, other utilities, and games. DOS itself might speed up for all I know. Giant RAMDisks also come to mind. Just tested TLW in Altirra at 21MHz with ROM/cart shadowing turned off and 80 column screen redraws (using the Antic driver) are massively improved. Contrast this with the WIP Graphical OS which runs from ROM: although the low-level redraw code is in RAM, all the higher-level stuff is in ROM so the speed improvements at 21MHz aren't great. Turn on cart shadowing in fast RAM, however, and and the thing is so massively accelerated that CPU usage drops to 0% in the profiler, causing corruption in the scrolling graph (which wasn't designed to handle 0 per cent!). 2 Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted March 23, 2016 Share Posted March 23, 2016 Rapidus and XL14 both run 65816s at higher clock speeds. Other than that, I can't say how similar they might be. You do not have to write any special code in order to take advantage of the higher speeds. You don't have to use linear memory, either. I usually just push the OS into RAM. In BASIC. this runs the FP routines at 14mhz - speeds up any BASIC code. Somewhere out there on YouTube is the GUI running at 7.16mhz. No special code there... Bob 1 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 23, 2016 Share Posted March 23, 2016 (edited) Somewhere out there on YouTube is the GUI running at 7.16mhz. No special code there... Yep - back when the whole thing ran in RAM. Edited March 23, 2016 by flashjazzcat 2 Quote Link to comment Share on other sites More sharing options...
+Larry Posted March 23, 2016 Share Posted March 23, 2016 Hi Jon- Do you believe that the Rapidus accelerator will help in the development of your GUI OS? -Larry Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 23, 2016 Share Posted March 23, 2016 Hi Jon- Do you believe that the Rapidus accelerator will help in the development of your GUI OS? -Larry If I had set out to write a 65C816-based OS with linear RAM, etc, life would have been much easier, but that wasn't the point of the exercise. So as things stand, the GOS will run a bit faster under Rapidus but not massively so without some way of shadowing ROM in fast RAM. 1.7MHz 6502C remains the target configuration on which the OS must run at acceptable speed. 4 Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted March 23, 2016 Share Posted March 23, 2016 Where is the ROM? Bob Quote Link to comment Share on other sites More sharing options...
TheNameOfTheGame Posted March 23, 2016 Share Posted March 23, 2016 If I had set out to write a 65C816-based OS with linear RAM, etc, life would have been much easier, but that wasn't the point of the exercise. So as things stand, the GOS will run a bit faster under Rapidus but not massively so without some way of shadowing ROM in fast RAM. 1.7MHz 6502C remains the target configuration on which the OS must run at acceptable speed. Glad to hear that! :thumbsup: 1 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 23, 2016 Share Posted March 23, 2016 Where is the ROM? There's one on my website... Not at home now so can't be more helpful. Quote Link to comment Share on other sites More sharing options...
drac030 Posted March 23, 2016 Share Posted March 23, 2016 In general, you have to drop into 6502 mode if the s/w is using illegal op-codes, or linear memory is enabled and the code wraps memory ($FFFF->$0000) with an indexed instruction. On Rapidus only the former case (i.e. the illogical opcodes) will force you to go into 6502 mode (or delete the offending program). The segment wraps are - optionally - patched out in the hardware, so that you can still use 65C816 and the turbo mode, even if the program shows the problem. As for OS ROM, Rapidus has own, flashable, accelerated OS ROM, which can be optionally enabled (or optionally disabled). There is some contents in it already, but since it is flash, you can flash anything into it. Switching it on alone already accelerates the Atari BASIC or anything that uses the system FP package, although not so greatly, because the ROM runs at 10 MHz. Of course if a BASIC interpreter runs in RAM (like TBXL or U-BASIC) it will be much faster. Also, even if a program is running in a cartridge (i.e. slow ROM clocked at stock frequency of 1,77/1,79 MHz), one can still expect some speedup resulting from a) fast internal CPU operations, 2) fast RAM reads, 3) optionally fast RAM writes. 1 Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted March 23, 2016 Share Posted March 23, 2016 FJC: I meant where is it in the address space? Bob Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 23, 2016 Share Posted March 23, 2016 FJC: I meant where is it in the address space? Desktop/system manager processes at $A000-$BFFF (banked ROM), kernel in RAM ($700-$3FFF, $C000-$FFFF), drivers and apps in banking window ($4000-$7FFF). Quote Link to comment Share on other sites More sharing options...
jvas Posted March 24, 2016 Share Posted March 24, 2016 Installed and working fine: Here is the place for Rapidus: 6052 desoldered: Socket installed: 6502 is back, checking if everything is ok: Rapidus is in place without the 3 wires soldered. Booting ok: From back: Everything is connected: Booting: 4 Quote Link to comment Share on other sites More sharing options...
jvas Posted March 24, 2016 Share Posted March 24, 2016 (edited) And the setup screen (by pressing inverse and reset): Edited March 24, 2016 by jvas 4 Quote Link to comment Share on other sites More sharing options...
ndary Posted March 24, 2016 Share Posted March 24, 2016 what is the DB9 connector for? Quote Link to comment Share on other sites More sharing options...
Panther Posted March 24, 2016 Share Posted March 24, 2016 Video from the VBXE. 1 Quote Link to comment Share on other sites More sharing options...
pasiu Posted March 24, 2016 Share Posted March 24, 2016 And the setup screen (by pressing inverse and reset):20160324_210057.jpg It is really great to see it working in your computer. It's quite stressful situation to me, as a HW designer, releasing such project to Atari Community. Maybe just one comment to the options in your settings menu. If you don't have the Ultimate 1MB extension installed in your machine. then set the "U1MB Expansion" to OFF, otherwise you can have some problems with running the system ROM from Rapidus. All the necessary information will be included in the Rapidus User's Guide, but unfortunately it is still not finished yet. 2 Quote Link to comment Share on other sites More sharing options...
Panther Posted March 24, 2016 Share Posted March 24, 2016 All the necessary information will be included in the Rapidus User's Guide, but unfortunately it is still not finished yet. At least there will be a user's guide! So many projects don't have one and the information has to be pieced together and figured out. 2 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 24, 2016 Share Posted March 24, 2016 And yet no-one reads manuals. Weird. 1 Quote Link to comment Share on other sites More sharing options...
Panther Posted March 24, 2016 Share Posted March 24, 2016 And yet no-one reads manuals. Weird. No, I just like to have them in my collection. =B> 2 Quote Link to comment Share on other sites More sharing options...
danwinslow Posted March 24, 2016 Share Posted March 24, 2016 (edited) It is really great to see it working in your computer. It's quite stressful situation to me, as a HW designer, releasing such project to Atari Community. Maybe just one comment to the options in your settings menu. If you don't have the Ultimate 1MB extension installed in your machine. then set the "U1MB Expansion" to OFF, otherwise you can have some problems with running the system ROM from Rapidus. All the necessary information will be included in the Rapidus User's Guide, but unfortunately it is still not finished yet. Pasiu, you guys are doing fantastic work. Do we know that adaptus board is available or not? Edited March 24, 2016 by danwinslow Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted March 24, 2016 Share Posted March 24, 2016 Do we know that adaptus board is available or not? Not yet. Not sure when... "Soon" I think. Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted March 25, 2016 Share Posted March 25, 2016 Any news on the F7? Does anyone know if it will fit under the cover of an Incognito 800? How about a 40 pin ribbon to remotely mount the Rapidus in the 800? There must be a way! Quote Link to comment Share on other sites More sharing options...
jvas Posted March 25, 2016 Share Posted March 25, 2016 If you successfully installed Rapidus, please say a big thank to Pasiu here! THANK YOU !!! 1 Quote Link to comment Share on other sites More sharing options...
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