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Author Topic: KnightOS  (Read 188555 times)

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SirCmpwn

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Re: KnightOS
« Reply #210 on: September 09, 2010, 11:58:10 pm »
Yes, but I'm concerned about timing issues with the next interrupt to be normally fired.  Does di/ei reset the timers?  What if it exists the interrupt just to come back in after a couple cycles?
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Offline matthias1992

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Re: KnightOS
« Reply #211 on: September 10, 2010, 07:15:20 am »
If i recall it properly DI and EI do not reset the timers, it does affect R and I though. Perhaps doing RETI is better then HALT?
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Offline calc84maniac

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Re: KnightOS
« Reply #212 on: September 10, 2010, 11:12:03 am »
Hey, now we can actually have an excuse to use the hacky conditional RST 38h :D

JR cond,$+1

This jumps to the second byte of the JR instruction if condition is true, and this second byte is $FF (the rst 38h opcode)
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SirCmpwn

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Re: KnightOS
« Reply #213 on: September 10, 2010, 04:58:42 pm »
Matthias, RETI is the same as RET, it just takes longer.
Calc84, awesome.
« Last Edit: September 10, 2010, 05:00:45 pm by SirCmpwn »
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Offline matthias1992

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Re: KnightOS
« Reply #214 on: September 10, 2010, 06:15:09 pm »
Quote from: SirCmpwn on September 10, 2010, 04:58:42 pm
Matthias, RETI is the same as RET, it just takes longer.
Calc84, awesome.
My bad, I was doing this from memory and I am still a learning asm programmer...
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Offline mapar007

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Re: KnightOS
« Reply #215 on: September 11, 2010, 02:06:10 am »
RETI is equivalent to atomic NOP RET on the TI-calculators. It matters little on our hardware, but it's definitely not HALT. ;-)
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SirCmpwn

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Re: KnightOS
« Reply #216 on: September 23, 2010, 08:42:36 am »
Update
I added directory support to the filesystem last knight, so the OS now has full read support for the filesystem.  I will be adding libraries today, and write support next.
« Last Edit: September 23, 2010, 08:45:47 am by SirCmpwn »
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Offline Broseph Radson

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Re: KnightOS
« Reply #217 on: September 23, 2010, 09:00:56 am »
Sweet!
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Offline mapar007

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Re: KnightOS
« Reply #218 on: September 23, 2010, 09:11:07 am »
U can haz kudos. What kind of libraries do you plan to implement? I mean, Xlib-like, math libs, stdlib-like, just plain kernel function wrappers,...
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Offline DJ Omnimaga

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Re: KnightOS
« Reply #219 on: September 23, 2010, 09:11:44 am »
Nice to hear! I assume since stuff is stored to archive that folders and their content is preserved after crashes, right?
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SirCmpwn

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Re: KnightOS
« Reply #220 on: September 23, 2010, 04:44:54 pm »
Yes.  The calculator actually clears all RAM on start-up.
Also, mapar, I plan on implementing math, GUI, graphics, and other libraries.
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Offline DJ Omnimaga

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Re: KnightOS
« Reply #221 on: September 23, 2010, 05:52:26 pm »
Cool to hear :D. I hated how in Mirage I lost my folder contents every reset x.x. I love the Nspire-style approach of your shell in terms of program storage
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SirCmpwn

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Re: KnightOS
« Reply #222 on: September 23, 2010, 05:53:59 pm »
*OS
Definitely not a shell :P
Thanks for the support!
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Offline DJ Omnimaga

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Re: KnightOS
« Reply #223 on: September 23, 2010, 06:12:04 pm »
woops yeah I meant OS, not shell. My bad :P
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SirCmpwn

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Re: KnightOS
« Reply #224 on: September 23, 2010, 06:13:22 pm »
Np :)
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