MOS Technology 6510
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The MOS Technology 6510 is a microprocessor designed by MOS Technology, Inc., and is a direct successor of the very successful 6502.
The primary changes from the 6502 were the addition of clock pins, which allowed the chip to make use of external clocks, and the addition of I/O ports which allowed the CPU to handle simple I/O tasks without needing the 6522 VIA. Because of this, the processor may be seen as a simple microcontroller.
The 6510 was only widely used in the Commodore 64 home computer (and in significantly smaller numbers in the C64's portable version, the SX-64). In both the C64 and SX-64 the extra pins of the processor were used for bank switching, and in the C64 also for controlling the electric motor of the Datassette tape recorder.
Variants
In 1985 MOS produced the 8500, an HMOS version of the 6510. Other than the process change, it is virtually identical to the NMOS version of the 6510. The 8500 was originally designed for use in the modernised C64, the C64C. However in 1985, limited quantities of 8500s were found on older NMOS based C64s. It finally made its official debut in 1987, appearing in a motherboard using the new 85xx HMOS chipset.
The 7501/8501 variant of the 6510 was used in Commodore's C16, C116 and Plus/4 home computers, and the 2 MHz-capable 8502 variant was used in the Commodore C128. All these CPUs are opcode compatible (including undocumented opcodes).
| List of 65xx(x)-based products from MOS Technology and the Western Design Center |
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Single board computers (kits), and microprocessors: MOS/CBM KIM-1 |
6501 |
6502 |
65C02 |
6507 |
6508 |
6509 |
6510/7501/8500-01 |
8502 |
65802 |
65816 Support chips: 6520 PIA | 6522 VIA | 6526 CIA | 6529 SPIA | 6530 RRIOT | 6532 RIOT | 6551 ACIA | 6560 VIC | 6567 VIC-II | 6581 SID | 6845 | 7360 TED | 8563 VDC |