sending data over headphone port

[Guest leofoxus]

does some know if there is a program that can send/recieve data to PC or other device using the headphone port? With source if possible.

[Guest RossDargan]

why on earth would you ever ever ever want to do that? You have a usb and bluetooth and infrared and gprs!!! why us a microphone/earphone???, thats like swapping broadband for a dial up connection

[Guest leofoxus]

why on earth would you ever ever ever want to do that? You have a usb and bluetooth and infrared and gprs!!! why us a microphone/earphone???, thats like swapping broadband for a dial up connection

1. my phone doesn't have bluetooth, and i haven't activated GPRS yet.

2. I want to use my phone as a place to store programs from my calculator (stupid calc has not enough mem :D ). My calculator only has a 2.5" port. So i though i could use that program to send/recieve from the phone, and i could make an assembly program for the calculator to send/recieve from that thing, so i could have 256 MB memory instead of stupid 160 KB.

That's why on earth i want to do that :lol:.

I wanted to do it so i could have more games on the calc, but i just realised i could also play that games on my phone, and better -_-' .

[Guest peterweg]

If you can write assembler why don't you write it yourself. I would say you could get 24k baud if you understood Digital Signal Processing, its effectivly a modem. So transfering 1MB would take about 6 minutes. Doing it simply would get you 2400baud do that would be an Hour per megabyte.

Why don't you write it yourself? Our buy and adapt a modem?

[Guest leofoxus]

If you can write assembler why don't you write it yourself. I would say you could get 24k baud if you understood Digital Signal Processing, its effectivly a modem. So transfering 1MB would take about 6 minutes. Doing it simply would get you 2400baud do that would be an Hour per megabyte.  

Why don't you write it yourself? Our buy and adapt a modem?

well, i can't write ARM assembler, only z80 :lol: . I'm still looking for a good ARM assembly tutorial.

I was just wondering if such a program existed, so i didn't have to learn ARM assembly and write it myself.

About the speed: i don't think the calculator could handle a speed like 6 minutes per megabyte. The built-in link function takes about 30 minutes to send 512K.

[Guest peterweg]

I don't think ARM is going to be that difficult, its a reduced instruction set compaired to the z80. You could look for old home PC's

that used z80 and had audi tape backup. Nascom 1/2. the zx80 etc

links

http://www.nascomhomepage.com/#Links

You should be able to find the assembler for the tape drive - the bios was only 1k AFAIR

zx80 emulators -some may have code for the tape

http://fms.komkon.org/comp/sys/Sinclair.html

Remember the Acorn Risc Machine the ARM was designed for may have had a audio cassete interface so it could play BBC Micro (Acorns preceeding )model) softwarehttp://en.wikipedia.org/wiki/Acorn_Archimedes

Somewhere you may find the ARM code to do it (ARM instruction set has expanded but it should be backwards compatible)

http://www.obsoletecomputermuseum.org/

But really, the best option might be to search for modem software

http://www.techonline.com/community/ed_res...e_article/20041

IT all depend son how much speed you want. If you understand Digital Signal Processing you could get 56k but you use morse code and get something passable. Simple binary coding might be acceptable.

What on earth do want to do this for, its crazy?

Hang on, does the calculator have and audio tape backup function?

[Guest leofoxus]

I don't think ARM is going to be that difficult, its a reduced instruction set  compaired to  the z80. You could look for old home PC's

that used  z80 and had audi tape backup. Nascom 1/2. the zx80 etc

what do you mean with audi tape backup? Like a tape recorder for that people used for back ups 10 years ago?

Remember the Acorn Risc Machine the ARM was designed for may have had a audio cassete interface so it could play BBC Micro (Acorns preceeding )model) softwarehttp://en.wikipedia.org/wiki/Acorn_Archimedes

Somewhere you may find the  ARM code to  do it (ARM instruction set has expanded but it should be backwards compatible)

http://www.obsoletecomputermuseum.org/

But really, the best option might be to Search for modem  software

http://www.techonline.com/community/ed_res...e_article/20041

IT all depend son how much speed you want. If you understand  Digital Signal Processing you could get 56k but you  use morse code and get something passable. Simple binary coding might be acceptable.

What on earth do want to do this for, its crazy?

I told you, the speed doesn't matter. The calculator has 160 KB of memory, so it will never recieve big files anyway. I want to use it for development. I'm making a Role Playing Game for it (http://forums.unitedti.org/index.php?showforum=37). If i could make the code on my phone, i wouldn't need a computer.

I think I could find a z80 assembler somewhere, but emulation software is a problem. So my idea was to send the assembled files directly to my calc using the sending program, and then test them.

Hang on, does the calculator have an audio tape backup function?

It probably hasn't.

by the way: the calculator is a z80 machine.