Combination of a load–store architecture with some exceptions which fall into the register–memory architecture family
Encoding
Variable
Branching
Carry bit, "sticky" bit and other flag registers
Endianness
Little-endian
Page size
No MMU or paging available
Extensions
Only extensions for emulated ARM-based "virtual" CPUs
Open
Proprietary
Predecessor
Nut
Registers
Nine 64-bit GPR and "scratch" registers, two 20-bit "data pointer" registers and other miscellaneous registers
General-purpose
Four 64-bit GPRs
Floating point
No FPU registers
Vector
No vector registers
The Saturn family of 4-bit (datapath) microprocessors was developed by Hewlett-Packard in the 1980s first for the HP-71B handheld computer and then later for various HP calculators (starting with the HP-18C). It succeeded the Nut family of processors used in earlier calculators. The original Saturn chip was first used in the HP-71B hand-held BASIC-programmable computer, introduced in 1984. Later models of the family powered the popular HP 48 series of calculators. The HP48SX and HP48S were the last models to use genuine Saturn processors manufactured by HP. Later calculator models used Saturn processors manufactured by NEC. The HP 49 series initially used the Saturn CPU as well, until the NEC fab[nb 1] could no longer manufacture the processor for technical reasons in 2003. Therefore, starting with the HP 49g+ model in 2003, the calculators switched to a Samsung S3C2410 processor with an ARM920T core (part of the ARMv4T architecture) which ran an emulator of the Saturn hardware in software. In 2000, the HP 39G and HP 40G were the last calculators introduced based on the actual NEC fabricated Saturn hardware. The last calculators based on the Saturn emulator were the HP 39gs, HP 40gs and HP 50g in 2006, as well as the 2007 revision of the hp 48gII. The HP 50g, the last calculator utilizing this emulator, was discontinued in 2015 when Samsung stopped producing the ARM processor on which it was based.[1][2][3]
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The Saturn family of 4-bit (datapath) microprocessors was developed by Hewlett-Packard in the 1980s first for the HP-71B handheld computer and then later...
Century II") 48G: 1993–2003 48G+ (F1630A, F1894A): 1998–2003 The HP 48 series' Saturn microprocessor is a hybrid 64-bit / 20-bit CPU hardware-wise but...
and Saturn nameplates were retired. A Red Line model of the Sky was introduced on April 11, 2006 at the New York Auto Show. It uses the same 260 hp (194 kW)...
in terms of reviews and sales. The Saturn Aura was the 2007 North American Car of the Year. The concept used a 252 hp (186 kW) 3.6 L V6 and a new 6T70 six-speed...
The Saturn Ion is a compact car sold by Saturn between the 2003 and 2007 model years. Based on the GM Delta platform, the Ion replaced the Saturn S-Series...
The Saturn S-series is a family of compact cars from the Saturn automobile company of General Motors. Saturn pioneered the brand-wide "no-haggle" sales...
The Saturn Vue is a compact SUV that was built and marketed by Saturn, and it was Saturn's best-selling model. It was the first vehicle to use the GM Theta...
The Saturn Relay is a minivan that was marketed by the Saturn division of General Motors. It was introduced for the 2005 model year, and was built alongside...
uses a new operating system unrelated to HP's legacy Saturn and Saturn-emulated systems, which were used on HP's previous RPN/RPL graphing calculators;...
The powerplant used in Saturn S-Series automobiles was a straight-4 aluminum piston engine produced by Saturn, a subsidiary of General Motors. The engine...
lower weight. Whereas the LCC-1 had a single 600-hp engine, the Overland Train had four 1,170-hpSaturn 10MC engines from Solar Turbines, one in the "control...
model L61 first appeared in the 2000 Saturn LS1; the L61-powered Saturn Ion also replaced the Saturn-powered Saturn S-Series. There are a few variations...
The Mitsubishi Saturn or 4G3 engine is series of overhead camshaft (OHC) straight-four internal combustion engines introduced by Mitsubishi Motors and...
The Saturn Outlook is a full-size crossover SUV that debuted at the New York International Auto Show, and was based on the GM Lambda platform, which it...
Saturn fitted the Vue with the 169 hp (126 kW) 2.4 litre Ecotec inline four. The 222 hp (166 kW) 3.5 litre V6 and the 3.6 litre V6 rated at 257 hp (192 kW)...
the Vauxhall Astra in the United Kingdom. It was rebadged and sold as the Saturn Astra in North America between 2008 and 2009, as the Buick Excelle XT from...
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