Hírek | Archívum | Fórum | IRC | Amiga | AmigaOS | FAQ | RSS

 - Fórumok - Keresés - Statisztika - Szabályzat - Pegasos.hu fórum
forum.amigaspirit.hu / Általános / PowerPC a világűrben
Szerző Üzenet
neongod
Alapító Tag

# Elküldve: 2010. Okt. 26. 09:25 - Szerkesztve: neongod


Tudtátok, hogy a Spirit és Opportunity Mars roverekben az onboard computer PowerPC alapú? :)
És a Mars Science Laboratory-ban is az lesz:

"The RAD750 is a radiation-hardened single board computer, based on IBM's PowerPC 750. The CPU has 10.4 million transistors compared with the RAD6000 which had 1.1 million transistors. It is manufactured using either 250 or 150 nm photolithography and has a die area of 130 mm². It has a core clock of 110 to 200 MHz and can process at 266 MIPS or more. The CPU can include an extended L2 cache to improve performance. Its packaging and logic functions are completely compatible with the standard PowerPC 750.

The CPU itself can withstand 2,000 to 10,000 gray and temperature ranges between –55 °C and 125 °C and requires 5 watts of power. The standard RAD750 single-board system (CPU and motherboard) can withstand 1,000 gray and temperature ranges between –55 °C and 70 °C and requires 10 watts of power.

The two identical on-board rover computers, called "Rover Electronics Module" (REM), contain radiation hardened memory to tolerate the extreme radiation environment from space and to safeguard against power-off cycles. Each computer's memory includes 256 kB of EEPROM, 256 MB of DRAM, and 2 GB of flash memory."

VxWorks (Real-Time OS) fut rajtuk, a leszállást vezérlő szoftvert C-ben írták, míg a felszíni vezérlés egy tákolmány :)) :

"The flight software is all written in C running on vxWorks. The ground software is a mishmash of C, C++, Fortran, Perl and Java (and maybe a few other things.)"

Travis
Tag
# Elküldve: 2010. Okt. 26. 09:36


Quoting: neongod
The ground software is a mishmash of C, C++, Fortran, Perl and Java (and maybe a few other things

Végüli is a leszállás a legfontosabb, ha utána csak körbe-körbe megy, azt is sikernek könyvelhetik el :-)

TCH
Tag

# Elküldve: 2010. Okt. 26. 11:26


Na, ezért kell PPC az Amigákba is. :)

Chain-Q
Divatamigás

# Elküldve: 2010. Okt. 26. 12:06


Ja, volt is ilyen beszólás régen, hogy "PowerPC has 100% market share - on Mars!" :)

forum.amigaspirit.hu / Általános / PowerPC a világűrben
 
 

Powered by PHP forum software miniBB™ © 2001-2020