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One of the computers known to be based on this processor is the educational WDR 1-bit computer (512 bits of RAM, LED, I/O, keyboard). [4] A modern take, in retro style, of a computer based on this processor is the PLC14500-Nano. It is certified as Open Source Hardware PL000011 so anyone can learn from its design and can freely build it.
A serial computer processes data a single bit at a time. For example, the PDP-8/S was a 12-bit computer using a 1-bit ALU, processing the 12 bits serially. [2]An example of a 1-bit computer built from discrete logic SSI chips is the Wang 500 (1970/1971) calculator [3] [4] as well as the Wang 1200 (1971/1972) [5] word processor series developed by Wang Laboratories.
PAL versions of the NES (sold in Europe, Asia, and Australia) use the Ricoh 2A07 or RP2A07 processor, which is a 2A03 with modifications to better suit the 50 Hz vertical refresh rate used in the PAL television standard. However, most developers lacked the resources to properly adjust their games' music from NTSC to PAL, leading to many PAL ...
Separate from the stack definition of a MISC architecture, is the MISC architecture being defined by the number of instructions supported. Typically a minimal instruction set computer is viewed as having 32 or fewer instructions, [1] [2] [3] where NOP, RESET, and CPUID type instructions are usually not counted by consensus due to their fundamental nature.
Processor Storage unit 1-4 assignment Bit Description 0 Processor Storage Unit 1 to CPU 1 1 Processor Storage Unit 1 to CPU 2 2-3 Reserved for CPU 3-4 4 Processor Storage Unit 1 to CC 0 5 Processor Storage Unit 1 to CC 1 6-7 Reserved for CC 3-4 8 Processor Storage Unit 2 to CPU 1 9 Processor Storage Unit 2 to CPU 2 10-11 Reserved for CPU 3-4 12
This was a PCW 9256 with 512 KB of RAM, a parallel printer port, and Locoscript 1.5 instead of Locoscript 1. The PCW 10 was not a success, and few were produced. By this time other systems offered much better print quality, and the PCW was a poor choice as a general-purpose computer, because of its slow CPU and incompatibility with MS-DOS systems.
Load/store relative with medium 18-bit displacement (32-bit encoding, 2-bit opcode). [1] CR16C comes with a different opcode encoding format, has 23–32-bit-wide address registers and provides two 32-bit general purpose registers. [3] CR16 implements traps and interrupts. Implementations of CR16 has three-stage pipeline: fetch, decode, execute ...
In this case the directory entry uses 1 bit for a group of processors for each cache line. For the same example as Full Bit Vector format if we consider 1 bit for 8 processors as a group, then the storage overhead will be 128/(32×8)=50%. This is a significant improvement over the Full Bit Vector format.