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Topics - Spyro543

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Computer Usage and Setup Help / HP probook 4525s won't boot from USB
« on: October 06, 2013, 04:47:23 pm »
I showed my mom Chromium OS and she really likes it want wants to use it on her computer, so I put it on a flash drive. The flash drive will boot and work fine in my laptop, but not in my mom's, which is an HP Probook 4525s. I've set the boot device order correctly, but the computer won't boot from the flash drive, it'll just go straight to Windows, even if I manually select to boot from the flash drive. I've tried a 4GB flash drive, a 8GB flash drive, and a 4GB sd card, and none of them will work on her computer (but they work on mine, which is a Samsung r540). Can anyone help with this?

Other / Verizon - Moving SIM from basic phone to smartphone
« on: August 29, 2013, 04:43:53 pm »
Just wondering, if I take the SIM card out of my basic phone and put it in a smart phone will the smart phone be activated and have my number? Also, will my plan be automatically updated to show that my number is now a smartphone? Or will anything happen at all? I'm on Verizon's Share Everything plan, by the way. This will probably not be what I'm doing to get a smartphone, I'll almost certainly just buy a new phone from Verizon, but I just want to know if this is an option.

Computer Usage and Setup Help / Looking for a desktop computer...
« on: July 04, 2013, 10:49:29 am »
My current computer, a laptop, isn't very good at playing my favorite games (Minecraft, Starmade, Sanctum, ...). Whenever I even go near a planet or space station in Starmade, my FPS drops to 2, 1, or sometimes 0 D:. Even just going near shops can cause noticeable lag. The computer also overheats fairly easily (and yes, I have cleaned out the fans) if I do too much graphics- or processor-intensive stuff. So I've been looking for a desktop computer, because I was led to believe that they generally run better, cooler, and are mostly cheaper than laptops. However, the only ones I've seen so far that could just match my current comp's specs are over $550-$600. Main Question of Post: I noticed that a lot of desktops at Best Buy have Pentium, i3, or AMD A1-something processors in them, and a lot of them have Intel HD graphics cards in them, and most of them have 4-6 GB of RAM. My question is: will desktop computers with these kind of specs run my favorite games faster than a laptop with an i3 processor, 3GB of RAM, and an Intel HD graphics card?

HP Calculators / HP 12c Programming
« on: June 29, 2013, 10:24:03 am »
I recently picked up a (working) HP 12c at a garage sale for $1 (saved $79!!). I also found out that it is a keystroke programmable calculator. I'm just wondering if anyone else here owns an HP 12c. If you do, please share your programs!  :thumbsup: I'm also trying to learn/figure out how to program it...

Other / R-2R resistor ladder
« on: May 31, 2013, 02:42:00 pm »
An R-2R resistor ladder is a nice little method of doing digital to analog conversion.
The one I made is 8-bit, so it can output 256 different voltages from 0V to 3.3V. Here are some pics:
You can see on my oscilloscope that I'm generating a saw wave. All I'm doing is counting from 0 to 255 really fast over and over again, and putting the number onto the 8 pins of the PIC that are connected to the resistor ladder. You can also see on the oscilloscope that the wave isn't perfectly straight, and that's because of the resistors' tolerance that is differing the resistance slightly. There's nothing I can do to fix that, except use resistors with smaller tolerance.

Here's a close up pic of the ladder:

If you want to learn more about this take a look at the wikipedia page here.

Other / Compact Computer 40
« on: May 16, 2013, 09:35:19 am »
I just got a CC40 last night! It's a neat little portable computer made by Texas Instruments in 1983. It runs TI Extended BASIC (but no graphical commands) (TI BASIC is a version of Microsoft BASIC, i think), and I've already written some programs for it! :D
It has a 2.5 MHz processor and 6k of static RAM. Pictures and possibly videos coming soon!

Other / Modern equivalent of Casiopeia A-20E?
« on: April 26, 2013, 09:29:04 am »
I just watched a review of the Cassiopeia a-20E pocket computer, and I thought it was a really nice device, but it's really really outdated. What are some good, inexpensive, modern counterparts of the A-20E? (Tiny computers with physical keyboards that run Windows) (a netbook, perhaps?)

General Calculator Help / [NEVER MIND!]Need Ndless SDK to compile nSDL
« on: April 13, 2013, 09:18:39 pm »
EDIT: SOLVED!!!!! It turns out I didn't need any of this stuff. :P

I tried to get the Ndless SDK from but the site is down, and has been down for a while. I need to compile nSDL into a binary so I can run Mini vMac. If anyone could upload the SDK here, or even better, upload the nSDL binary, that would be great. Thanks  :)

Other / SP-10 Computer [SP-Assembly!]
« on: April 05, 2013, 09:28:07 am »
I'm making an 8-bit computer. It won't be like your average computer; no screen or keyboard. Instead it has 8 switches and 3 buttons for input, and 16 LEDs for output. 8 LEDs show the current address you are looking at, and the next 8 show the data in the address. The computer has 256 bytes of RAM. Since the programs are stored in RAM, and the only way to store data is to edit RAM, the program can re-program itself :D There are no registers, instead everything is done with direct RAM addresses. To edit RAM, you put in an address in the 8 switches then hit the ADDR button, which changes the currently open address to the one on the switches. You can press the STORE button to store the number on the switches into the currently open address. The RUN button starts the program from the currently viewed address. I'm not finished with this, I'm still writing the programming, but I do actually have everything breadboarded. It will all be run with a PIC18F46K20 processor. I know it's a bit overkill to use a powerful processor, but it's nice to have four 8-pin ports.

So I have a question for you all: since the programs are stored in RAM, when you turn off the computer, everything in RAM is lost. The PIC processor I am using has an internal EEPROM. When the computer shuts off, should I auto- backup the RAM  to the EEPROM, and then load the EEPROM contents into RAM when the computer is turned back on? Or not? Or maybe do it some other way?

Here  is the planned assembly language for the SP-10 computer; try writing neat programs! When I have the system finished, I will run your guys' programs and make videos of them!
In this table, X and Y just represent arguments.
The table is here (UPDATED TABLE!!) :

Youtube Video:

Other / PIC18F header?
« on: April 04, 2013, 06:56:05 am »
Does anyone here program PIC18F's in C? If you do, then you should have the header file: "p18f46k20.h"
Mine got all messed up, and I tried looking  on Google, and the ones I find there are pretty full of errors too. So if anyone has this file, please upload it. Thanks!

Casio PRIZM / [fx-9750GII] MClite - MCL for Casio Calcs
« on: March 22, 2013, 08:26:32 pm »
Anyone remember the little Minecraft clone I made a while ago (MCL)? Well, I'm making a 2D Minecraft clone in CASIO-BASIC. Here it is:

In game controls:
ARROW KEYS: Move and Jump
EXIT: Return to Menu

Main Menu controls:
[1] Key: Make a new world
[2] Key: Load world from Matrix C
[3] Key: Exit MClite

Some info about the save file:
MClite saves into a 7 tall by 21 wide matrix, always Mat C. The data values for the blocks are as follows:
Data valueBlock
0Empty (Air)
1□ (Empty Square)
2■ (Filled Square)
9I (Player)

File is MCL.G1M (attached to post)

First off, here's my code:
In The code, you'll see me writing [] and (). These correspond to the filled square character and the empty square character.
Code: [Select]
{7,21}->Dim Mat C
Fill(0, Mat C)
While X<22
If Y>7
Then 7->Y
If Y<2
Then 2->Y
Locate X,Y,"()"
1->Mat C[Y,X]
For Y+1->I to 7 Step 1
Locate X,I,"[]"
2->Mat C[Y,X]
Locate 1,2,"I"
9->Mat C[2,1]
While K!=47
Locate 1,1,"()"
Locate 2,1,A
Locate 6,1,B
Locate 5,1,"[]"
If Mat C[Y+1,X]=0
Then Locate X,Y," "
0->Mat C[Y,X]
9->Mat C[Y,X]
Locate X,Y,"I"
If K=38 And X>1 And Mat C[Y,X+1]=0
Then 0->Mat C[Y,X+1]
Locate X,Y," "
9->Mat C[Y,X]
Locate X,Y,"I"
If K=27 And X<27 And Mat C[Y,X-1]=0
Then 0->Mat C[Y,X-1]
Locate X,Y," "
9->Mat C[Y,X]
Locate X,Y,"I"

I hand-typed this code while looking at my calc screen so if you see any weird typing mistakes just ignore them :P

This is a world generation program that I will be using for my secret project (even though it's not so secret, because you now see my source code :P)

I'm getting ARGUMENT ERROR at the line that says:
Code: [Select]
If K=27 And X<27 And Mat C[Y,X-1]=0
What is going on here? Everything should be OK...

Also, everything else works fine, the world generator and the player falling mechanism.

Casio PRIZM / [Casio-Basic] DnD Dice Roll (NOW WITH DOWNLOADS)
« on: March 19, 2013, 10:19:45 pm »
This is a little program I've been making for those times when you're playing DnD and you have no dice with you. You can "simulate" dice rolls for D2, D4, D6, D10, D12, D20, and change the modifier. No screenshots or binaries yet, but they'll be coming tomorrow! For now, here's the controls:
F1-F6: Select dice to roll
Add, subtract: Change modifier
DEL: Clear modifier and results
EXIT: Stop program execution
EXE: Roll die

I *might* make a TI version, but don't count on it. I might also make a graphical Add-In version later.

Other / Something I'd like to see on iOS
« on: February 11, 2013, 07:12:45 pm »
I recently jailbroke my iPod, and I've been having too much fun with all the little interface tweaks available in Cydia. One thing I'd really like to see would be a Windows-like desktop: being able to put icons on your desktop wherever you want, folders are unlimited in size, there's a start menu and task bar, all that wonderful stuff. Are there any packages available for doing this (or something like it)?

Computer Programming / Getting the bits out of a number
« on: January 18, 2013, 02:21:54 pm »
Let's say I have a variable that is char type and is equal to 'A' which is 65 in decimal and 01000001 in binary. How can I access the individual bits in that variable? For example, accessing bit 0 would result in 1. How can I do this in C?

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