Khavi: Java on the Prizm

[DJ Omnimaga]

You should maybe also copy your progress every hour on a CD or DVD plus an extra copy on a flash drive, in case that fails too.

[alberthrocks]

I sound like an annoying spammy advertiser (maybe I am ), but Dropbox is your friend. Anything I regard as important (documents, essays, projects, interesting files, etc.) I place into my Dropbox folder. (You basically install Dropbox and then put everything you want to sync in the folder, and the daemon automatically syncs it to the server.) There is no revision control (at least not that I know of for the free plan, but it may have changed).

My workflow for wxWabbitemu is pretty much: checkout from SVN, modify code in Dropbox folder, verify that the code works, and then push the changes to SVN. That way, there's no way you could lose ANY code, unless you delete the folder by accident, or the world explodes.

** Admitting, I never do this for my on-calc projects. I want to make an iTunes like app to sync programs and apps back and forth, without the bloat...

EDIT: A portable version is available for Dropbox, if you can't install. PM me/poke me/etc.

[Ashbad]

Personally, I keep things safe with a multitude of thumb drives.  Those also work well.

Either way, good luck qwerty

[AngelFish]

Here's the current source for the context switcher. It's mostly completed, aside from a single call to the [currently unwritten] scheduling algorithm.

Code: Select All | Copy To Clipboard

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/* Khavi context switcher (to be located in RAM and accessed from  */ /* Uses Round robin for simplicity */ /* Table bitfields: * First node: [Address of current linked list][Address of next linked list][registers] * All secondary nodes: [Address of next linked list][registers] */ /* Should also store/reload the table if planning to implement process/thread distinction */ Start_switcher: mov.l r2,@-r15 /* Store registers for use */ mov.l r1,@-r15 mov.l r0,@-r15 mov.l first_table,r0 mov.l @r0,r0 /* move address of current table into r0 */ add #0x7F,r0 /* Offset r0 to end of table. Needs to be tuned properly. */ mov.l @r15+,r2 /* Store r0 to table */ mov.l r2,@-r0 mov.l @r15+,r2 /* Store r1 to table */ mov.l r2,@-r0 mov.l @r15+,r2 /* Store r2 to table */ mov.l r2,@-r0 mov.l r3,@-r0 /* Store rest of registers */ mov.l r4,@-r0 mov.l r5,@-r0 mov.l r6,@-r0 mov.l r7,@-r0 mov.l r8,@-r0 mov.l r9,@-r0 mov.l r10,@-r0 mov.l r11,@-r0 mov.l r12,@-r0 mov.l r13,@-r0 mov.l r14,@-r0 mov.l r15,@-r0 stc sr,r1 /* Switch register banks */ mov.l mask,r2 /* These lines derived and modified from Linux kernel 2.6.* */ xor r2,r1 bra rest ldc r1,sr mask: .long 0x40000000 rest: stc.l r1,@-r0 stc.l gbr,@-r0 stc.l vbr,@-r0 stc.l ssr,@-r0 stc.l spc,@-r0 stc.l r0_bank,@-r0 stc.l r1_bank,@-r0 stc.l r2_bank,@-r0 stc.l r3_bank,@-r0 stc.l r4_bank,@-r0 stc.l r5_bank,@-r0 stc.l r6_bank,@-r0 stc.l r7_bank,@-r0 sts.l mach,@-r0 sts.l macl,@-r0 sts.l pr,@-r0 add #-4,r0 /* Go to table to be restored */ mov.l @r0,r0 mova Start_switcher,r2 lds.l @r0+,pr /* restore system registers */ lds.l @r0+,macl lds.l @r0+,mach ldc.l @r0+,r7_bank ldc.l @r0+,r6_bank ldc.l @r0+,r5_bank ldc.l @r0+,r4_bank ldc.l @r0+,r3_bank ldc.l @r0+,r2_bank ldc.l @r0+,r1_bank ldc.l @r0+,r0_bank ldc.l @r0+,spc ldc.l @r0+,ssr ldc.l @r0+,vbr ldc.l @r0+,gbr ldc.l @r0+,sr stc sr,r1 /* Switch register banks */ mov.l mask,r2 /* These lines derived and modified from Linux kernel 2.6.* */ xor r2,r1 ldc r1,sr mov.l @r0+,r15 mov.l @r0+,r14 mov.l @r0+,r13 mov.l @r0+,r12 mov.l @r0+,r11 mov.l @r0+,r10 mov.l @r0+,r9 mov.l @r0+,r8 mov.l @r0+,r7 mov.l @r0+,r6 mov.l @r0+,r5 mov.l @r0+,r4 mov.l @r0+,r3 add #-12,r15 /* Set SP properly */ mov #8,r1 /* modify linked lists */ add r0,r1 /* Need to add call to scheduling algorithm to choose next thread/process */ mov r1,@r2 mov.l @r0+,r1 mov.l r1,@-r15 mov.l @r0+,r1 mov.l r1,@-r15 mov.l @r0+,r1 mov.l r1,@-r15 mov.l @r15+,r2 mov.l @r15+,r1 rte mov.l @r15+,r0 first_table: .long 0x00000000 /* address of first node in linked list */

[willrandship]

So, when will LWJGL be ported so we can run minecraft?

Also Albert, actually there is revision control to a point: You can recover up to 5 older versions of a file that completely uploaded. That could mean weeks, days, or seconds, depending on how save-happy you are.

But then, dropbox wasn't designed as a replacement for svn. It was designed as a replacement to NFS drives.

[AngelFish]

It'll be ported when you compile the native stuff for Prizm

[AngelFish]

Okay, it's been a whole two days () since I posted on progress.

As it turns out, there were a few things in the old Java interpreter that didn't quite mesh with the official Sun spec, so I'm in the process of fixing those. I'm also going to be doing garbage collection a bit differently and I've started on the beast that is memory management. There will be a repository up sometime in the near future as soon as I get the project approved.

[flyingfisch]

The project is going to sun approved? cool!

[AngelFish]

I doubt it will ever be approved by Sun/Oracle. I'm just making it somewhat compatible with the Java Virtual Machine specification.

[Deep Thought]

The project is going to sun approved? cool!

You'd probably have to pony up some fee to get it officially approved, but having this fit the entire spec sounds like a great idea. This looks like a really useful project -- good luck!

[willrandship]

It will be able to run native code inside, right? (like android can, often used for emus) That means if we can get TI to put it in 3.0.3 and later, then we'd have Asm access!

You know, sans ndless. (which is still awesome, but the no 3.x atm is a downer)

[AngelFish]

It can definitely run native code (after all, the interpreters are nothing but well documented native code that the framework was designed to handle), but it's not on the Nspire

[willrandship]

Oh yeah *facepalm* I fail at memory.

Still cool though!

[AngelFish]

Just so everyone knows, the Lua available will be the latest version I have available, which probably means 5.2 beta. This may introduce some problems for compilers, although I believe 5.2 is largely backwards compatible.

[boot2490]

Yay! Now I can play minecraft on a calculator!
if only.
EDIT: Seriously, why am I always the one to start pages???