Aug 17

It's time to think about the SC-3000X enclosure...

 

The original SC-3000? Uh?

 

Inside view. Original mobo removed, flatten space, my Dremel does the job! Trioflex microSD card adapter present on right, fixed on plastic with UHU Patafix (needed some final solution).

 

Detail of microSD adapter with microSD inside (4GB).

 

Original keyboard connected (through floppy cable) to PS/2 controller card got from an old PC keyboard. Total remap of keys was done!

 

Right view of modified enclosure.

 

 

Jun 13

Yeah!!!

Finally an almost stable implementation of FAT32 filesystem in SD-5000 integrated sdcard interface.

Enjoy...

Apr 12

FAT32! Finally a first try of FAT32 filesystem management.

 

 

 

Sep 17

Finally!!!

This time your eyes are pleasured by my first attempt to recreate SEGA SC-3000 home computer (1983).

Through this video you can see my IPL rom loading original SEGA BasicLevel 3A from SDcard.

After loading 32KB of data into RAM, the IPL rom deactivate itself rebooting into loaded data.

Enjoy...

 

Sep 12

SDCARD! Finally an almost correct initialization.

On first row onto the screen we can see the initialization commands prefixed by ">" character.

We can see CMD0, CMD59, CMD8, ACMD41, CMD16 and finally CMD17 (READ_SECTOR).

The data is written onto sdcard starting from sector 0 using a sector-editor, in order to avoid (by now) FAT routines implementation.

The screen shows on second row the data from 0x0100 to 0x01FF (256 bytes) of SEGA BASIC Cart.

 

 

 

Apr 11

Finally I decided to start a new project...

Project? What project? Click here to learn more.

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Apr 11

Hello there, today I will introduce you my brand new Altera DE1 FPGA Development Board.

Yeah! This board substitutes my Xilinx Spartan 3AN for a while, due to difficults in RAM usage (DDR2) of this board and lacking for other features (decent audio DAC, SRAM, SD slot,...).

Altera DE1 has many good and interesting features like:

  • Cyclone II EP2C20F484C7 (18,752 Logic Elements, 52x M4K 4kbits ram blocks, 234kbits embedded memory, 26x 18-bit x 18-bit multipliers, 4 PLL, 315 I/O pins)
  • EPCS4 4-Mbit serial configuration device programmable to store the FPGA configuration autoloaded on start
  • 512KByte SRAM (256x16bit asynchronous, very very useful and simple to program)
  • 8MB DRAM (synchronous DRAM but not hard-to-use as DDR2 one)
  • 4MB Flash RAM
  • 1x 50Mhz Clock
  • 1x 27Mhz Clock
  • 1x External SMA clock input
  • 12bit VGA DAC (4096 colors on screen is enough for many things)
  • 24bit Audio CODEC with lin-out, line-in, mic-in connectors (wow! how many beautiful things can we do with a similar audio DAC!!!)
  • Onboard SD card slot (yeah! useful to access external data like... ROMS....)
  • PS/2 keyboard connector
  • 10 red LEDs, 8 green LEDs, 10 switches
  • 4x debounced pushbuttons
  • 4x 7-segments display
  • 2x IDE expansion headers to accessing external devices/resources
  • 1x RS-232 (useful to monitor/debug application from PC)

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Apr 10

Why a Nintendo DS Page?

Due to my interests in Nintends DS development I decided to insert a full page containing every piece of code resulted from my not-so-normal mind.

It will contains both Windows application and Nintendo DS ones.

Enjoy.

 

Nov 10

Finally I inserted the cracktros page under projects page, that includes many of my scene cracktros.

Enjoy my oldskool stuffs!!!

"A crack intro, also known as a cracktro, loader, or just intro or dentro, is a small introduction sequence added to cracked software, designed to inform the user of which "cracking crew" or individual cracker was responsible for removing the software's copy protection and distributing the crack. They first appeared in the early 1980s." From Wikipedia.

Here's for you my best cracktros developed in many years as TRSi, Complex, Lockless member and also released in best demo scene sites as Pouet.net.

Nov 07

Benvenuti nel mio blog nuovo-di-zecca, che raccoglierà tutti i contenuti che mi riguardano.

 

Buon divertimento!

 

P.S.: aggiungo un pò di testo casuale per testare il layout nuovo:

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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