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6502 Memorabilia |
| 6500 Data
Sheet. This is the original, MOS Technology
"Preliminary Data Sheet" from August 1975. It
includes the 6501, which was pin compatible with
the Motorola 6800. It also includes the 6502,
6503, 6504 and 6505. High Resolutions Scans for
all 12 pages are included.
One of the interesting things
about this data sheet is the fact that the 6501
was included. Since the 6501 was pin compatible
with the 6800, Motorola sued MOS Technology. The
suit was settled when MOS Technology agreed to
drop the 6501 from its product line and only
market the 6502.
Many early computer builders
were attracted to the 6502 because of its low
price and the because had indirect and indexing
modes, which were useful for developing
high-languages. |
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| 6530 Data
Sheet. This is the original "Preliminary
Data Sheet" from August 1975. This chip had a
mask-programmable ROM as well as an assortment
of I/O channels and on chip timers. MOS
Technology sold a special version of the Chip
called a TIM, which contained an Assembly
Language Monitor. The Monitor could be used to
examine and modify memory locations and run
programs, replacing the ubiquitous, replacing
toggle switches and lights, with a teletype
giving a much more intuitive human interface.
Since the 6530 didn't have a hardware UART, so
the chip simulated it in software.
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