14 replies to this topic

[UNIXcoffee928]

Due to lack of interest this post has been removed.

Edited by UNIXcoffee928, Thu May 4, 2006 9:40 AM.

[supercat]

Just get a 120 with some good pens, a bunch of paper, a movie camera with step-frame capability, a lightstand, and some 100-speed negative film and you can shoot a movie of what playing Asteroids would look like if you had a vector-tube display.

[warerat]

UNIXcoffee928, on Wed Apr 19, 2006 10:28 PM, said:

Can someone with a 1020 do a disassembly of the 1020 ROMS, and post it so we can start reverse engineering them?

Not so easy here. The 6805 has its own internal ROM and there's this other custom chip labeled SC87190. Really custom deal.

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[Bryan]

It would be easier just to look at the programming info for the 1020 and make something compatible with that. Are we talking about trying to do real-time vectors over the SIO port?

-Bry

[UNIXcoffee928]

Due to lack of interest this post has been removed.

Edited by UNIXcoffee928, Thu May 4, 2006 9:41 AM.

[Rybags]

APE has a built-in 1020 emulator (I haven't tried it).

It would be impossible to drive a vector monitor with SIO.

Just too slow, plus you have to rescan each line at least 20 times/second.

Plus, vector monitors are redundant anyway. You can almost exactly emulate the look and feel of one with the PC.

[Fröhn]

Rybags, on Thu Apr 20, 2006 4:46 AM, said:

Plus, vector monitors are redundant anyway. You can almost exactly emulate the look and feel of one with the PC.

Definitely not!

[warerat]

Rybags, on Thu Apr 20, 2006 2:46 AM, said:

APE has a built-in 1020 emulator (I haven't tried it).

It would be impossible to drive a vector monitor with SIO.

Just too slow, plus you have to rescan each line at least 20 times/second.

Plus, vector monitors are redundant anyway. You can almost exactly emulate the look and feel of one with the PC.

I tried the 1020 emulator with some demo programs and it worked pretty good.

[devwebcl]

UNIXcoffee928, on Wed Apr 19, 2006 6:28 PM, said:

A user named Gus had begun an emultion, for use just as a printer- is he still with us? Can you post the code?

the "emulator" never was released, neither its code. you can see some screenshots at http://www.atariware...&highlight=1020

there you can read (in Spanish) that actually is not an emulator, but an parser that analyses the commands the atari returns when plotting and redirecting output to a text editor with atari800win+.

for example, the program LINES.BAS found at http://www.matesoftw...ri/test1020.zip

returns (low&high ascii deleted):

...
S0
L0
J480,0
R-480,-15
S0
L1
J480,0
R-480,-15
...

maybe, someone would like to do something similar and finish it

cheers,

devwebcl

[UNIXcoffee928]

Due to lack of interest this post has been removed.

Edited by UNIXcoffee928, Thu May 4, 2006 9:43 AM.

[Bryan]

Here's another idea...

Take the vector circuitry from early Atari arcade games and isolate it into a PBI device. Then you can drive a vector monitor in the same way Tempest does.

(Tempest the game, that is... although for all I know Tempest has interfaced a vector monitor to himself).

-Bry

[ZylonBane]

Here's a better idea-- just buy an old Vectrex and play around with that.

Seriously, what gets it in people's heads that crazy projects like this are worth anybody's time? If someone wants to drive a vector monitor, there are many infinitely superior solutions than hacking up custom hardware and software for a 25-year-old home computer.

Now if you'll excuse me, I need to get back to my project to turn a pair of Atari 800s into fuzzy slippers.

[Bryan]

ZylonBane, on Thu Apr 20, 2006 4:38 PM, said:

Now if you'll excuse me, I need to get back to my project to turn a pair of Atari 800s into fuzzy slippers.

822's are perfect for this.

-Bry

[UNIXcoffee928]

Due to lack of interest this post has been removed.

Edited by UNIXcoffee928, Thu May 4, 2006 9:43 AM.

[UNIXcoffee928]

Due to lack of interest this post has been removed.

Edited by UNIXcoffee928, Thu May 4, 2006 9:44 AM.