287 replies to this topic

[bob1200xl]

The two '816s that I have are both 7.16mhz, one with linear memory and one without. With minor effort, I could probably get something for you if you only want the basic hack but you would only have something you could play with. (it's about 300% faster than stock) Later versions would supercede the current ones. I think your other problem is that it may not fit in an 800XL/600XL because it hits the keyboard.

Bob

sloopy, on Tue Nov 24, 2009 1:16 AM, said:

i am looking for a 7.16Mhz 65816 in my 800xl :') and what do you mean by 'a place to take root'? i have a '816 in my machine now but it just runs at stock speed... would like something faster, but dont really want to reinvent the wheel, and this 'project' seems to be the most reasonable possibility right now...

sloopy.

bob1200xl, on Mon Nov 23, 2009 9:33 PM, said:

Build your own? You don't need to go that far... The project is pretty much floating around my computer room, looking for a place to take root.

What are you looking for?

Bob

sloopy, on Sun Nov 22, 2009 8:22 PM, said:

so is this project moving forward? or has it died as is? i would be interested in this, even if i have to build my own...

sloopy.

[sloopy]

Greetings Bob,
yeah actually i think i want to put it in my 130XE which uses an external kb, i just want one to play with, with linear mem (doesnt need much, i have couple 62256's sitting around i could use, so just sockets would be fine) how much $$$ would you want? i am not too rich (currently on unemployment) so let me know... also what are the commmercial prospects for this? is someone going to take up the torch to make it into a full product?

thanks,
sloopy.

[bob1200xl]

The 512K memory only costs $6 or $7. It would take a lot of 62256s to make 512K... What kind/speed/how many 65816s do you have?

Bob

sloopy, on Tue Nov 24, 2009 10:14 PM, said:

Greetings Bob,
yeah actually i think i want to put it in my 130XE which uses an external kb, i just want one to play with, with linear mem (doesnt need much, i have couple 62256's sitting around i could use, so just sockets would be fine) how much $$$ would you want? i am not too rich (currently on unemployment) so let me know... also what are the commmercial prospects for this? is someone going to take up the torch to make it into a full product?

thanks,
sloopy.

[MEtalGuy66]

Where is the "write-up" on this project for those who'd be interested in building it themselves?

[bob1200xl]

Anyone who wants to make one at this stage of the game would have to be a pretty good hardware guy. My write-ups tend to be a bit skimpy, with a few errors thrown in. ABBUC has one with the docs and I haven't heard any success stories from them.

Know anyone who could do this? (or, would want to?)

Bob

MEtalGuy66, on Wed Nov 25, 2009 5:18 PM, said:

Where is the "write-up" on this project for those who'd be interested in building it themselves?

[sloopy]

i have ran on less, i would be interested in the info, the only '816 i have is a 4Mhz spec one from a IIgs, but i dol have a GAL programmer, (need to get a few GALs i am out right now...) but it doesnt seem that hard... big thing is doing the GAL right... i am working on another project right now, and the 816 would be a fine addition to it and probly would help with it...

sloopy.

[bob1200xl]

And this is the problem...

You would have to get one or two 65816s, a couple of memory chips, and be able to program Atmel 1504 CPLDs. Along with all the little pieces of hardware (sockets, pins, etc.) to go with it.

Here are some files that build a 7mhz machine. They are not exact, but should give you an idea as to how the 816 interleaves with the stock Atari. One is for the GAL that times the system, one for the extended memory, one for the MMU PAL in the Atari, and one is the PCB.

The next design will pull the MMU into the CPLD (an Atmel 1504) so we can (hopefully) clock up to 14mhz. The logic itself does not change, to any great extent.

Take a look at them and tell me how useful they are.

Bob

sloopy, on Wed Nov 25, 2009 8:51 PM, said:

i have ran on less, i would be interested in the info, the only '816 i have is a 4Mhz spec one from a IIgs, but i dol have a GAL programmer, (need to get a few GALs i am out right now...) but it doesnt seem that hard... big thing is doing the GAL right... i am working on another project right now, and the 816 would be a fine addition to it and probly would help with it...

sloopy.

[bob1200xl]

oh, yeah... the files...


 MMU51.zip   19.34K   43 downloads


Bob

bob1200xl, on Fri Nov 27, 2009 1:35 PM, said:

And this is the problem...

You would have to get one or two 65816s, a couple of memory chips, and be able to program Atmel 1504 CPLDs. Along with all the little pieces of hardware (sockets, pins, etc.) to go with it.

Here are some files that build a 7mhz machine. They are not exact, but should give you an idea as to how the 816 interleaves with the stock Atari. One is for the GAL that times the system, one for the extended memory, one for the MMU PAL in the Atari, and one is the PCB.

The next design will pull the MMU into the CPLD (an Atmel 1504) so we can (hopefully) clock up to 14mhz. The logic itself does not change, to any great extent.

Take a look at them and tell me how useful they are.

Bob

sloopy, on Wed Nov 25, 2009 8:51 PM, said:

i have ran on less, i would be interested in the info, the only '816 i have is a 4Mhz spec one from a IIgs, but i dol have a GAL programmer, (need to get a few GALs i am out right now...) but it doesnt seem that hard... big thing is doing the GAL right... i am working on another project right now, and the 816 would be a fine addition to it and probly would help with it...

sloopy.

[Larry]

Hi Bob-

Do you believe it is feasible to create a 7MHz (800XL) board using point-to-point wiring?

Or do you have an layout image suitable for someone else to make a limited number of boards of one of your design that would fit into the 800XL? IIRC, you did have a "2nd generation 600/800XL board." (?)

Perhaps "a bird in the hand..."

-Larry

bob1200xl, on Fri Nov 27, 2009 1:35 PM, said:

And this is the problem...

You would have to get one or two 65816s, a couple of memory chips, and be able to program Atmel 1504 CPLDs. Along with all the little pieces of hardware (sockets, pins, etc.) to go with it.

Here are some files that build a 7mhz machine. They are not exact, but should give you an idea as to how the 816 interleaves with the stock Atari. One is for the GAL that times the system, one for the extended memory, one for the MMU PAL in the Atari, and one is the PCB.

The next design will pull the MMU into the CPLD (an Atmel 1504) so we can (hopefully) clock up to 14mhz. The logic itself does not change, to any great extent.

Take a look at them and tell me how useful they are.

Bob

sloopy, on Wed Nov 25, 2009 8:51 PM, said:

i have ran on less, i would be interested in the info, the only '816 i have is a 4Mhz spec one from a IIgs, but i dol have a GAL programmer, (need to get a few GALs i am out right now...) but it doesnt seem that hard... big thing is doing the GAL right... i am working on another project right now, and the 816 would be a fine addition to it and probly would help with it...

sloopy.

[bob1200xl]

I have many, many point-to-point projects worse than this, (dual ANTIC, 80 col, etc.) but that isn't a good reason to do it in wire. Most of your 'wiring changes' will be in the CPLD, anyway.

I guess the answer is no. What I have needs tweaking.

Bob

Larry, on Sun Nov 29, 2009 12:21 PM, said:

Hi Bob-

Do you believe it is feasible to create a 7MHz (800XL) board using point-to-point wiring?

Or do you have an layout image suitable for someone else to make a limited number of boards of one of your design that would fit into the 800XL? IIRC, you did have a "2nd generation 600/800XL board." (?)

Perhaps "a bird in the hand..."

-Larry

bob1200xl, on Fri Nov 27, 2009 1:35 PM, said:

And this is the problem...

You would have to get one or two 65816s, a couple of memory chips, and be able to program Atmel 1504 CPLDs. Along with all the little pieces of hardware (sockets, pins, etc.) to go with it.

Here are some files that build a 7mhz machine. They are not exact, but should give you an idea as to how the 816 interleaves with the stock Atari. One is for the GAL that times the system, one for the extended memory, one for the MMU PAL in the Atari, and one is the PCB.

The next design will pull the MMU into the CPLD (an Atmel 1504) so we can (hopefully) clock up to 14mhz. The logic itself does not change, to any great extent.

Take a look at them and tell me how useful they are.

Bob

sloopy, on Wed Nov 25, 2009 8:51 PM, said:

i have ran on less, i would be interested in the info, the only '816 i have is a 4Mhz spec one from a IIgs, but i dol have a GAL programmer, (need to get a few GALs i am out right now...) but it doesnt seem that hard... big thing is doing the GAL right... i am working on another project right now, and the 816 would be a fine addition to it and probly would help with it...

sloopy.

[atariksi]

bob1200xl, on Sun Nov 29, 2009 3:42 PM, said:

I have many, many point-to-point projects worse than this, (dual ANTIC, 80 col, etc.) but that isn't a good reason to do it in wire. Most of your 'wiring changes' will be in the CPLD, anyway.

I guess the answer is no. What I have needs tweaking.

Bob

Larry, on Sun Nov 29, 2009 12:21 PM, said:

Hi Bob-

Do you believe it is feasible to create a 7MHz (800XL) board using point-to-point wiring?

Or do you have an layout image suitable for someone else to make a limited number of boards of one of your design that would fit into the 800XL? IIRC, you did have a "2nd generation 600/800XL board." (?)

Perhaps "a bird in the hand..."

-Larry

bob1200xl, on Fri Nov 27, 2009 1:35 PM, said:

And this is the problem...

You would have to get one or two 65816s, a couple of memory chips, and be able to program Atmel 1504 CPLDs. Along with all the little pieces of hardware (sockets, pins, etc.) to go with it.

Here are some files that build a 7mhz machine. They are not exact, but should give you an idea as to how the 816 interleaves with the stock Atari. One is for the GAL that times the system, one for the extended memory, one for the MMU PAL in the Atari, and one is the PCB.

The next design will pull the MMU into the CPLD (an Atmel 1504) so we can (hopefully) clock up to 14mhz. The logic itself does not change, to any great extent.

Take a look at them and tell me how useful they are.

Bob

sloopy, on Wed Nov 25, 2009 8:51 PM, said:

i have ran on less, i would be interested in the info, the only '816 i have is a 4Mhz spec one from a IIgs, but i dol have a GAL programmer, (need to get a few GALs i am out right now...) but it doesnt seem that hard... big thing is doing the GAL right... i am working on another project right now, and the 816 would be a fine addition to it and probly would help with it...

sloopy.

I would be more interested in the dual ANTIC if someone produces it and doesn't require much soldering. I suppose it has it's own memory otherwise too many DMA cycles per scanline to allow CPU to do anything.

[bob1200xl]

Yes, the second ANTIC uses its own memory. I like the idea because we don't have to learn anything new in order to program it. The only sticky spot is trying to do 80 columns. It could be done in graphics mode, I suppose, but then you would need the faster CPU.

The only way to do something like that without much soldering would be to sync up two whole systems.

Let's make it faster, first. Then we can think about a dual-core Atari.

Bob





[/quote]

I would be more interested in the dual ANTIC if someone produces it and doesn't require much soldering. I suppose it has it's own memory otherwise too many DMA cycles per scanline to allow CPU to do anything.
[/quote]

[sloopy]

WDC 65816 1400+ X2 :'D

sloopy.

bob1200xl, on Sun Nov 29, 2009 9:47 PM, said:

Yes, the second ANTIC uses its own memory. I like the idea because we don't have to learn anything new in order to program it. The only sticky spot is trying to do 80 columns. It could be done in graphics mode, I suppose, but then you would need the faster CPU.

The only way to do something like that without much soldering would be to sync up two whole systems.

Let's make it faster, first. Then we can think about a dual-core Atari.

Bob

Edited by sloopy, Sun Nov 29, 2009 10:56 PM.