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MyBIOS, an alternative OS for your Atari.


mr-atari

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Always wanted to try tapes and tape-images, but could not bare the loading times?

MyBIOS can load tapes and tape-images up to 5000 baud :-)

 

Thanks to the emulation core of altirra (v2.80 and up), you can go up to 2400 and see yourself how that loads.

As hardware gadget, I use a home-brew SIO2arduino with added CAS-support to playback CAS-files.

I added a overwrite function (multiplication-factor using jumpers) to go up from 600 to 6000 baud max.

 

Using ALTIRRA:

The only thing you need to do is to change the baud-rate in the CAS-file header and use MyBIOS as firmware.

CAS-file header @ $000E change from $58 $02 to $60 $09 (600 -> 2400)

 

I attached bruce lee modified to 2400 baud.

Use START to boot this cassette.

Bruce Lee 2400 baud.zip

post-6668-0-78942000-1496572752.png

Edited by mr-atari
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  • 3 weeks later...

Why not add the Maxflash Studio file to this download so we have the option to put different game roms in the menu. There is only one game rom that I play a lot and it is not on the menu listing.

 

Also there is not a 32k pack file in this download.

 

OK, I think the separation and the optional "create your own workbook" has succeeded.

Separate files that you need to do this are now included.

 

:-)

 

Much has changed internally, normal users won't notice.

Like (safe) reset-handling and keeping (any) cartridge at the current setting.

-See the change-log file

 

Update uploaded to my home-page for download.

Next thing on my ToDo-list is the debugging of the MyIDE PLUG-IN....

Anyhow, enjoy it for now.

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Sorry guys, due to problems with the boot-loader and consequently the myide-plugin....

I had to removed the zip-file.

 

I need some days to figure this out, no idea what went wrong between the final version and what I have zipped.

 

Sorry for the inconvenience :-(

 

The fixed and updated version will be back online tomorrow (I hope).

 

Later!

post-6668-0-13311000-1498111545.png

Edited by mr-atari
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Short update:
Somehow, don't ask me why, some source files were corrupted.

Seems like a typical windows screw-up

 

....Murphy's law.....

 

No current back-up, especially with my new code.

-sigh-

 

So, what better to do on those rainy days then re-doing/typing my routines.

 

There is no upload available yet, sorry for that

But I do have a new welcome screen.

:-)

post-6668-0-49163700-1498385488.png

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  • 2 weeks later...

OK, final version uploaded.

 

Load/Save memory state is a cool (cheat) gadget.

Just to play through some games you never going to finish either-way....

 

Most of the functional bugs are now removed.

Some odd behavior bugs may surface.

Just drop me a line when this happens.

 

MyBIOS version -03

MyIDE-PLUGIN version -02

 

Enjoy, and thanks for all the feedback.

 

Grtz,

Sijmen.

 

P.S.

Working on the MyIDE-PLUGIN manual at the moment.

In the meantime, please refer to the 4.8 and 4.9 manuals.

 

 

post-6668-0-83893500-1499416448.png

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I was trying to update U1MB with

MyBiosFastxxxx.rom using

uflash.xex from FlashJazzCat's Site.

Uflash loaded well, asking for the

device. Selected Ultimate1MB, and got

the garbage screen appended...

Cpld needs ??? update ???

 

What goes wrong?

Any help apreciate!

 

Stefan

post-38469-0-95692400-1499530768_thumb.jpg

Edited by Stefan Both
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This is exactly the same "crash screen" I got during my "troubles with U1MB and SIDE2". Don't know what causes it yet.

 

You are seeing part of the program and data memory. The CPLD part does not necessarily apply to you (probably not).

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Smiley-Facepalmani.gif

 

Also from the manual:

 

 

"THE EASY WAY"
Put myide-][.bin in your FAT-directory
Boot your atari
Use the FAT-loader
Select myide-][.bin and press cntrl-F (flash)
-do not power down when flash is in progress!

 

Select myide-][.bin and press cntrl-F (flash)

 

and press cntrl-F (flash)

----> cntrl-F <----

 

Well... after correct flashing the MyIDE, it works perfect !

Thank you Sijmen !

 

Stefan

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Well... after correct flashing the MyIDE, it works perfect !

Thank you Sijmen !

 

Stefan

My pleasure.

 

The new unlocked Save/Load feature, I think, is awesome.

I had one previously, that was rather buggy.

This one dumps the complete 62k ram and settings.

Until you turn the atari off.

 

Playing "The Goonies", now makes sense. :-)

 

Grtz from sunny Netherlands.

Sijmen.

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The new unlocked Save/Load feature, I think, is awesome.

 

Playing "The Goonies", now makes sense. :-)

 

 

And behind Jaggie Lines too...

After some training in higher levels,

the only limiting factor so far was

the "oh, look at the clock" problem.

I think I start a new try this evening,

now with the safe and loading feature...

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And behind Jaggie Lines too...

After some training in higher levels,

the only limiting factor so far was

the "oh, look at the clock" problem.

I think I start a new try this evening,

now with the safe and loading feature...

I quickly tested the R16 version of rescue on fractilus:

(Loaded into MyIDE-][ as cartridge-emulation)

 

Loading and saving works, but you can't leave the MAIN MENU with ESC.

The game does not restore ANTIC/GTIA by itself.

 

You need to press A (or D) instead of ESC.

A will use the ANTIC shadow-registers to restore video.

(D uses all shadow-registers for ANTIC/GTIA)

 

Grtz,

Sijmen.

Edited by mr-atari
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