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Image of the internals of a Commodore 64 showing the 6510 CPU (40-pin DIP, lower left). The chip on the right is the 6581 SID. The production week/year (WWYY) of each chip is given below its name. The MOS Technology 6510 is an 8-bit microprocessor designed by MOS Technology. It is a modified form of the very successful 6502.
The channel is known for its videos on restoration of old computers, [12] [13] and demonstration of old technology. [14] [15] Murray has also developed video games designed to run on old computers, including Planet X1 for the VIC-20, [16] Planet X2 for Commodore 64, [17] [18] Planet X3 for MS-DOS [19] [20] [21] and Attack of the PETSCII Robots for the Commodore PET (since ported to other ...
8 512 soft 160 kB 300 MFM Commodore 64 (8-bit) 5 1 ⁄ 4 inch Double 1 35 Variable (17-21) ZCAV: 256 soft 170 kB 300 GCR [NB 6] 2 340 kB Quad 1 77 Variable (23-29) ZCAV 521 kB 2 1,042 kB 3 1 ⁄ 2 inch Double 2 80 10 512 800 kB MFM Commodore Amiga: 5 1 ⁄ 4 inch Double 2 40 11 512 soft 440 kB [NB 7] 300 MFM [NB 8] Quad 80 880 kB [NB 9] 3 1 ...
The C64 has 64 KB of 8-bit-wide dynamic RAM, 1 KB of 4-bit-wide static color RAM for text mode, and 38 KB are available to built-in Commodore BASIC 2.0 on startup. There is 20 KB of ROM, made up of the BASIC interpreter, the KERNAL , and the character ROM.
Its library, however, paled in comparison to the large software libraries enjoyed by the Commodore 64 and VIC-20. The rounded case design of the high-profile CBM-II series would later be used in redesigned versions of the original PET/CBM computers, (such as the CBM8296) that the CBM-II line was designed to replace.
PETSCII (PET Standard Code of Information Interchange), also known as CBM ASCII, is the character set used in Commodore Business Machines' 8-bit home computers.. This character set was first used by the PET from 1977, and was subsequently used by the CBM-II, VIC-20, Commodore 64, Commodore 16, Commodore 116, Plus/4, and Commodore 128.
An 8-bit register can store 2 8 different values. The range of integer values that can be stored in 8 bits depends on the integer representation used. With the two most common representations, the range is 0 through 255 (2 8 − 1) for representation as an binary number, and −128 (−1 × 2 7) through 127 (2 7 − 1) for representation as two's complement.
The MOS Technology 6581/8580 SID (Sound Interface Device) is the built-in programmable sound generator chip of the Commodore CBM-II, Commodore 64, [1] Commodore 128, and MAX Machine home computers. Together with the VIC-II graphics chip, the SID was instrumental in making the C64 the best-selling home computer in history, [ 2 ] and is partly ...