MOS 6502

From VisualChips

(Difference between revisions)
Jump to: navigation, search
(Links to non- MOS 6502 chips restored, in order to avoid orphaned pages)
(some reordering and rewording)
Line 2: Line 2:
We have photographs of the metal and lower layers, the polygons captured, the circuit extracted and we have published [http://visual6502.org/JSSim a javascript simulator].  There is an [https://github.com/pmonta/FPGA-netlist-tools FPGA project] to implement the simulation in hardware. We have (as yet) unpublished simulators in python and C.
We have photographs of the metal and lower layers, the polygons captured, the circuit extracted and we have published [http://visual6502.org/JSSim a javascript simulator].  There is an [https://github.com/pmonta/FPGA-netlist-tools FPGA project] to implement the simulation in hardware. We have (as yet) unpublished simulators in python and C.
-
See the [[#6502 additional information|additional information]] further down this page
+
== Our Analysis ==
 +
* Collected [[6502Observations|observations]] of 6502 layout and behaviour.
 +
* [[6507 Decode ROM|Decode ROM]] (describing the Atari 6507, not exactly the same as the NMOS 6502 used in the [http://visual6502.org/JSSim visual6502 simulator]
 +
* [[6502 all 256 Opcodes|all 256 6502 opcodes]] including illegals and their actions
 +
* [[6502 Stack Register High Bits|Stack Register]]
= 6502 additional information =
= 6502 additional information =
 +
See also the [http://visual6502.org/links.html links] page on the main site.
== Primary Sources ==
== Primary Sources ==
Line 23: Line 28:
* [http://members.chello.nl/taf.offenga/illopc31.txt Freddy Offenga: 6502 Undocumented Opcodes]
* [http://members.chello.nl/taf.offenga/illopc31.txt Freddy Offenga: 6502 Undocumented Opcodes]
* [http://www.zimmers.net/anonftp/pub/cbm/documents/chipdata/6502-NMOS.extra.opcodes Adam Vardy: Extra Instructions Of The 65XX Series CPU]
* [http://www.zimmers.net/anonftp/pub/cbm/documents/chipdata/6502-NMOS.extra.opcodes Adam Vardy: Extra Instructions Of The 65XX Series CPU]
-
 
-
== Our Analysis ==
 
-
* collected [[6502Observations|observations]] of 6502 layout and behaviour.
 
-
* [[6507 Decode ROM]] (note that this describes the Atari 6507, not exactly the same as the NMOS 6502 used in the [http://visual6502.org/JSSim visual6502 simulator]
 
-
* [[6502 all 256 Opcodes|all 256 6502 opcodes]] including illegals and their actions
 
-
* [[6502 Stack Register High Bits|Stack Register]]
 

Revision as of 21:48, 2 February 2011

Contents

MOS 6502 family

We have photographs of the metal and lower layers, the polygons captured, the circuit extracted and we have published a javascript simulator. There is an FPGA project to implement the simulation in hardware. We have (as yet) unpublished simulators in python and C.

Our Analysis

6502 additional information

See also the links page on the main site.

Primary Sources

Secondary Sources

Previous Analysis

Personal tools