Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Keoni29

Pages: 1 ... 39 40 [41] 42 43 ... 168
601
Other / SID synthesizer with MIDI
« on: January 11, 2014, 08:20:17 am »
I am building a SID synthesizer with a MOS 6581 and an ATmega328 (microcontroller subject to change)



Test setup with MIDI! I want to add some knobs that allow me to change patches and stuff.
The test setup consists of a SID chip, a microcontroller and a 1MHz oscillator circuit.

602
Art / Re: Font Contest CSE
« on: January 09, 2014, 03:31:55 pm »
Sounds like a fun contest. I might doodle some characters over the weekend.

603
TI Z80 / Re: Calc Coin: A Bitcoin Proof of Concept
« on: January 09, 2014, 02:49:13 am »
Quote from: ordelore on January 08, 2014, 05:56:49 pm
Quote from: Sorunome on January 07, 2014, 02:53:27 pm
How do you plan on making detection for if somebody is really using a calculator and not some custom pc software?
Quote from: fb39ca4 on January 07, 2014, 09:00:10 pm
We could do this for s**ts and giggles, but it's not going to work as an actual currency, as someone could just run the mining algorithm on their CPU and outpower all the calculators.

I don't think anyone has been able to comunicate with a calculator while said calculator is running an assembly program.

Quote from: ben_g on January 07, 2014, 02:54:43 pm
It sounds like an interesting project, but I don't fully understand the purpose of this currency. How would you earn some of this currency? And on what can you spend it?

This is just a nice little proof of concept. If I get working well enough, then I might make it a huge project. As of now, you can only buy a higher difficulty  >:D.

Quote from: DJ Omnimaga on January 07, 2014, 09:23:02 pm
Or someone could overclock his calculator with radium :trollface:

And then I'll overclock mine with plutonium  :evillaugh:.

On the subject of progress, I have made the entire program already, and now have to implement increasing difficulty.
It is really easy to communicate with  a calc running an assembly program as long as the assembly program has some lines of code to handle the communication. It has been done countless times.

604
Other / Re: z80-like portable computer for <$30! (If you build one)
« on: January 06, 2014, 01:42:40 pm »
Testing my syntax highlighter with the graphics test code:

; Graphics.inc
; Tile based graphics. For use with the Parallax Propeller multicore chip.

; Routine: copy tilemap
; RR2 holds pointer to the tilemap in flash
cp_tilemap:   
   ;add R5,#20h      ;Calculate address of last tile
   ;adc R4,#01h
   ld R1,#0
row:
   ld R0,#0      ;Amount of columns
tile:
   ldc R2,@RR4
   call w_tile
   incw RR4
   inc R0
   cp R0,#17
   jr ne,tile
   inc R1
   cp R1,#15
   jr ne,row

   ret

w_tile:
   push R0
   ;Send x coordinate
   call putc
   call delayshort
   call delayshort

   
   ;Send y coordinate
   ld R0,R1
   call putc
   call delayshort
   call delayshort
   
   ;Send tile number
   ld R0,R2
   call putc
   call delayshort
   call delayshort
   call delayshort
   pop R0
   ret
   

605
Other / Re: TI84+ soundchip - arduino SID emulator
« on: January 06, 2014, 04:53:44 am »
I made a test setup for my SID soundchips (real ones) to see which ones still worked. So far I got 2 functional SID chips. I want to try to interface one with my calculator.


606
Gaming Discussion / Re: Your best video game pickups.
« on: January 04, 2014, 05:39:28 pm »
All complete. I think they are all sold by now. They were all great games.

607
Gaming Discussion / Re: Your best video game pickups.
« on: January 04, 2014, 03:50:20 pm »
I saw some other cool ds games as well. They had a whole stack, but I did not allow myself to buy more than one game.

608
Gaming Discussion / Re: Your best video game pickups.
« on: January 04, 2014, 03:41:07 pm »
I got the prequel to Mario and Luigi dream team: Mario & Luigi partners in time for the nintendo ds recently. I played it for a bit and I finally got past the wiggler boss. Before I owned it I played it on my R4 cart. I usually just use it to try out games. DS games are pretty cheap these days and I was happy to pick up a complete copy for €15.

609
TI Z80 / Re: AudaciTI - 4 channel music player and editor (in the works)
« on: January 04, 2014, 07:00:49 am »
On it

610
ROM Hacking and Console Homebrew / Re: Petit Computer
« on: January 03, 2014, 03:57:42 am »
Too bad it's only available for dsi and 3ds. I don't own those consoles.

611
TI Z80 / Re: AudaciTI - 4 channel music player and editor (in the works)
« on: January 03, 2014, 03:46:43 am »
Ah so that causes the weird modulation effect. You should use PWM instead.

612
TI Z80 / Re: AudaciTI - 4 channel music player and editor (in the works)
« on: January 02, 2014, 05:27:41 pm »
The pitch can be off, but all channels should still be in tune when only the base frequency is changed.

613
Other / Re: z80-like portable computer for <$30! (If you build one)
« on: January 02, 2014, 05:24:29 pm »
The read buffer size seems to be hardcoded and I think the read buffer is located in the cog's own memory. I am not going to rewrite the code for serial. Instead I am going to write code for an SPI slave which writes the incoming bytes to shared memory where the tilemap is stored. This means that the bytecode interpreter is only needed to bootstrap the cores, but it does not act like a bridge anymore. This will increase the speed!

614
TI Z80 / Re: AudaciTI - 4 channel music player and editor (in the works)
« on: January 02, 2014, 05:20:33 pm »
I tried it in wabbit. There seems to be some sort of weird modulation going on instead of clean separated channels.

615
TI Z80 / Re: AudaciTI - 4 channel music player and editor (in the works)
« on: January 02, 2014, 03:01:35 pm »
The soundchip in the commodore 64 computer from the 80's

Pages: 1 ... 39 40 [41] 42 43 ... 168