Complete 2005/sykes review
The bugs.md file has been updated with INABIAF section. The README.md refers to this file. The README.md has had a slight improvement in that references to lines in the author's remarks have been turned into links.
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@@ -5,6 +5,17 @@ make
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```
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### Bugs and (Mis)features:
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The current status of this entry is:
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```
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STATUS: INABIAF - please **DO NOT** fix
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```
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For more detailed information see [2005 sykes in bugs.md](/bugs.md#2005-sykes).
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## To use:
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```sh
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@@ -240,13 +251,14 @@ mode. Otherwise some PET specific features are skipped during normal
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[emulation](https://en.wikipedia.org/wiki/Emulator).
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The main processing all happens in a heroic expression containing no
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less than 64 ternary operators (after `cpp`) starting on line 56. This
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decodes the
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less than 64 ternary operators (after `cpp`) starting on [line
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56](https://github.com/ioccc-src/temp-test-ioccc/blob/master/2005/sykes/sykes.c#L56).
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This decodes the
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[6502](https://en.wikipedia.org/wiki/MOS_Technology_6502#Technical_description)
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instructions according to a table and executes them.
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The addressing mode is decoded in a similar expression starting on line
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53.
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The addressing mode is decoded in a similar expression starting on [line
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53](https://github.com/ioccc-src/temp-test-ioccc/blob/master/2005/sykes/sykes.c#L53).
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### Bugs
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@@ -2224,6 +2224,38 @@ bug but it's worth pointing out as it won't work on as many websites as it used
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to including the [IOCCC website](https://www.ioccc.org) itself.
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## 2005 sykes
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### STATUS: INABIAF - please **DO NOT** fix
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### Source code: [2005/sykes/sykes.c](2005/sykes/sykes.c)
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### Information: [2005/sykes/README.md](2005/sykes/README.md)
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The author stated the below points of interest.
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The machine emulated is an older 40 column one so 80 column programs will not
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show up correctly.
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There is no emulation of [PET](https://en.wikipedia.org/wiki/Commodore_PET)
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graphics characters.
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The parameter controls the speed of the 60Hz "jiffy clock", and not the
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processor speed. This means many games may run too fast to be usable -
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it really depends on the speed of your machine.
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Although the PET [emulator](https://en.wikipedia.org/wiki/Emulator) can do `LOAD`
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and `SAVE`, it cannot `VERIFY` or `OPEN` and `CLOSE` files.
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The [PET](https://en.wikipedia.org/wiki/Commodore_PET) hardware
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[emulation](https://en.wikipedia.org/wiki/Emulator) is not at all complete -
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features such as the hardware timers are completely missing. Some programs will
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not run correctly.
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The
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[6502](https://en.wikipedia.org/wiki/MOS_Technology_6502#Technical_description)
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[emulation](https://en.wikipedia.org/wiki/Emulator) does not include the seldom
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used decimal mode, or any of the "undocumented" instructions.
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# 2006
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