The Third 512-byte OS Contest!

[Troy Martin]

salil: Crashes in both Bochs and VPC:

Code: Select all

00112411872p[FDD  ] >>PANIC<< write 0x03f5: receiving new command 0x00, old one
(0xe6) pending
00112411872e[FDD  ] io_write: 0x3f5: invalid floppy command 0x00
00128689730e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128703055e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128716380e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128729705e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128743030e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128756355e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128769681e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128783007e[CPU0 ] read_RMW_virtual_word_32(): segment limit violation
00128829255i[CPU0 ] WARNING: HLT instruction with IF=0!

[salil_bhagurkar]

That is weird. For me it works perfectly fine in both Bochs and Qemu. I don't know about VPC since i don't have it right now. It seems to have written to the port 0x3f5.. Did you do that or it just happened. I am not using that port by default in code. Are you sure you configured bochs correctly?

[Masterkiller]

That is weird. For me it works perfectly fine in both Bochs and Qemu. I don't know about VPC since i don't have it right now. It seems to have written to the port 0x3f5.. Did you do that or it just happened. I am not using that port by default in code. Are you sure you configured bochs correctly?

It works fine, anyway in bochs I was unable to restart neither writing FE to 0064, not writing 01 to 0092, it just stops, but in Virtual PC works fine. Anyway that problem is not part of your program

[salil_bhagurkar]

Yes, I just tried it in Bochs-2.3.7 and it just freezes. But it works in old versions of Bochs. I guess its about clearing the 8042 buffer or something.

[Troy Martin]

That is weird. For me it works perfectly fine in both Bochs and Qemu. I don't know about VPC since i don't have it right now. It seems to have written to the port 0x3f5.. Did you do that or it just happened. I am not using that port by default in code. Are you sure you configured bochs correctly?

It doesn't even boot. freezes after a bunch of dots.

[quanganht]

Music demo gives sounds on VM Ware

[salil_bhagurkar]

Whats the prize for being last in the poll?

[Masterkiller]

Yeah, 10x for that music demo. I just discovered that my internal speaker not working. Anyway MS VPC emulate the sound of internal speaker through the sound card Hm, now I'm looking for a speaker...

BTW scgtrp, you should try to upgrade your etch a sketch with a mouse driver outside of the competition. It'll result a really good program

[salil_bhagurkar]

I don't understand how Zenith rolls in the whole song in 512 bytes. Its got the PC speaker frequency information, the tone delay and the graphic colors... How can that fill in to 512 bytes? Or is he compressing?

[NickJohnson]

I don't think compression would save much space regardless of what you're doing. 512 bytes of anything will only compress fractionally, and you also need to add a decompression routine.

[Coty]

yes, the rotien would cost more than what it would be worth... I cannot find the source, was it even included?

[Coty]

oops

[Troy Martin]

I don't think it was... I'll definitely include that as a rule in the next compo.

[Coty]

So i guess how it works will remain a mystery.

[Troy Martin]

Well, one could always decompile the binary, but that would translate stuff incorrectly..