[Featured][Dev] PindurTI (Best Thread 2005)

Jim e · Post by **Jim e** » Tue 19 Apr, 2005 3:11 pm

CoBB, how accurate were these timings? I'd like to know for something I wanna try.

Also is 5mhz accurate as well?

Offtopic:
I made interrupt based contrast contorl in like 25 lines. Wasn't hard or anything, but I guess it's allittle late for duck to add it now.

Edit: THIS IS THE BEST 17 PAGE READ EVER!!!!

Timendus · Post by **Timendus** » Tue 19 Apr, 2005 4:11 pm

benryves wrote:Repton reads the system contrast value and whenever you adjust the contrast inside Repton it writes back to the system contrast value.

So does TCOL when you select "Apply". That's not "messing with the contrast", that's just changing the contrast like you would with 2nd+Up/Down...

The first thing I did when I started experimenting with the GPP is ripping out that ugly frequency option at the beginning of a program

. No offence Duck, but that was one ugly menu

But I guess we should get back on topic...

CoBB · Post by **CoBB** » Tue 19 Apr, 2005 5:42 pm

Jim e wrote:CoBB, how accurate were these timings? I'd like to know for something I wanna try.

Also is 5mhz accurate as well?

No, it seems that 6MHz is closer to reality for most people. The interrupt timings are very accurate, the divergence is practically within the error of measurement, as confirmed by my later experiments (both recording the link port and counting on the calc itself). If you have overlooked, here's the formula to calculate the exact frequency:

http://wikiti.denglend.net/index.php?title=83:Ports:04

Which also means that anyone working on a frequency adjuster should also play with bit 4, at least on the 83. This is the order from the highest to the lowest frequency (hex values, of course): 10 > 00 > 12 > 02 > 14 > 04 > 16 > 06.

Jim e · Post by **Jim e** » Tue 19 Apr, 2005 6:06 pm

I was wondering about bit 4, I saw that the os in the 83 set it specificly. Also that it didn't use the unknown lcd commands. My only problem with that is that the 83+ didn't have it, I tested every bit combination for port 4, got nothin. It might be in another port, but not a major concern right now.

I was thinking of putting ducks frequency adjustment back in RGP, but modifing it to only use useful frequencies.

Thanx Cobb

Srry for getting offtopic.

Duck · Post by **Duck** » Tue 19 Apr, 2005 9:08 pm

benryves wrote:The first thing I did when I started experimenting with the GPP is ripping out that ugly frequency option at the beginning of a program . No offence Duck, but that was one ugly menu

Yea I know it was ugly. But back then, it was quite small (75 lines), and does quite much (show a line, clear part of the screen, show text, key control, change interrupt frequency) within my abilities. I wanted it to be small so it could be used by even the smallest grayscale game. I could have left it, but I thought people new to the technique would have trouble writing their own.

Wow, now there is RGP, everyone is attacking GPP.

And Jim E, yeah I also made some small contrast routines still lying around somewhere... It can be done with some simple port writes.

Shadow Phoenix · Post by **Shadow Phoenix** » Tue 19 Apr, 2005 9:13 pm

Duck wrote:
benryves wrote:The first thing I did when I started experimenting with the GPP is ripping out that ugly frequency option at the beginning of a program . No offence Duck, but that was one ugly menu
Yea I know it was ugly. But back then, it was quite small (75 lines), and does quite much (show a line, clear part of the screen, show text, key control, change interrupt frequency) within my abilities. I wanted it to be small so it could be used by even the smallest grayscale game. I could have left it, but I thought people new to the technique would have trouble writing their own.

It was cooooooool

CoBB · Post by **CoBB** » Tue 19 Apr, 2005 9:21 pm

News flash: 82 emulation is also working. Since linking is troublesome, I haven't uploaded it yet.

Shadow Phoenix · Post by **Shadow Phoenix** » Tue 19 Apr, 2005 9:31 pm

CoBB wrote:News flash: 82 emulation is also working. Since linking is troublesome, I haven't uploaded it yet.

*cough* 84+SE!!!!*cough*

Timendus · Post by **Timendus** » Tue 19 Apr, 2005 10:45 pm

Duck wrote:
benryves wrote:The first thing I did when I started experimenting with the GPP is ripping out that ugly frequency option at the beginning of a program . No offence Duck, but that was one ugly menu

Hey, I thought I wrote that

Anyway, I'm not attacking the gpp. Your greyscale package is just brilliant, as it made acceptable greyscale possible for the first time. I only said that the menu was really ugly

And on topic: You adapted it to work for the Ti-82 this fast?

I found that a reset button would be very useful, so you don't have to load the rom image on it all the time. Are you planning on putting one in?

DJ_O · Post by **DJ_O** » Tue 19 Apr, 2005 11:03 pm

WOW 82 emulation alerady?

As for the gpp interrupt frequency menu, I dont think it's that bad. Maybe it would be a bit cooler if we could change the frequency using arrows and if we were allowed to put a picture above the menu

Timendus · Post by **Timendus** » Tue 19 Apr, 2005 11:06 pm

Kevin wrote:and if we were allowed to put a picture above the menu

Code: Select all

; Start
    ld hl,picture
    ld de,plotsscreen
    ld bc,768 minus size of ugly menu
    ldir
    call gsSetFreq or whatever it was called

Should do the trick...

Edit: Oh, wait, I'm being stupid... you'd have to copy two layers to the greyscale buffers... Well, never mind, I'm too lazy to look that up

CoBB · Post by **CoBB** » Wed 20 Apr, 2005 4:55 am

Shadow Phoenix wrote:*cough* 84+SE!!!!*cough*

I won't even cough up what's missing for me to do that.

Timendus wrote:And on topic: You adapted it to work for the Ti-82 this fast?

It's almost the same as the 83, I only modified the link port. Testing might reveal other differences, but it works well at first sight.

Post by **tr1p1ea** » Wed 20 Apr, 2005 8:02 am

Well its good to know that you have further functionality planned for this calc. I was wondering if PindurTI has a full keymap? I cant seem to find the '->' (Store) key?

blueskies · Post by **blueskies** » Wed 20 Apr, 2005 8:20 am

Whoa...I hadn't realized how realistic this emulator actually was until a few minutes ago. I ran the Jackal demo through it, and was amazed to see a blur as I scrolled around. You really nailed the screen detail CoBB.

pacHa · Post by **pacHa** » Wed 20 Apr, 2005 8:45 am

CoBB wrote:News flash: 82 emulation is also working. Since linking is troublesome, I haven't uploaded it yet.

wow, that's nice CoBB
you're really impressive

may I ask if you have emulated the two hardwares (about the link port stuff) so that all ROMs (including the 19.006) will work ?