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C128 memory mapping and reference guide

Home Page: https://c128lib.github.io/Reference/

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c128 commodore128 reference kernal memory-map commodore commodore-128

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reference's Issues

$0200-$02FF - Common indirect routines

$AF00-$AFFF - BASIC Jump Table

Kernal routine explaination

Add documentation for kernal routine.
References from mapping128.pdf and https://cx16.dk/c128-kernal-routines/

$1200-$12FF - BASIC General-Purpose Working Storage

Add Rec (ram expansion controller) memory ref ($DF00-$DF0A)

Reference mapping128 page 250 (494 on manual)

$0B00-$0BFF - Cassette Buffer and Disk Boot Buffer

$1100-$01FF - BASIC Working Storage

$B000-$BFFF - Monitor Jump Table

$E000-$FFFF - Kernal Rom, Standard Commodore Jump Table

$1000-$10FF - Programmable Key Definition String Area

$0300-$03FF - Basic/Kernal indirect vectors, Screen editor tables, Kernal file tables, Basic working storage

$4000-$AEFF - BASIC Entry Vectors

Sprite movement control data and shadow registers

Write reference for sprite data registers (117e-11d5), taking these sources:

Mapping 128 book page 158
Advanced_Commodore_128_Graphics_and_Sound_Programming_1988_TAB_Books.pdf page 372
Write reference for shadow registers (11d6-11e6), page 158 or Mapping 128 book

$0E00-$0FFF - Sprite Pattern Storage Area

Add Sid memory ref (D400-D41C)

Reference manual mapping128.pdf page 192 (378 on manual)

$0A00-$0AFF - Kernal and Screen Editor Working Storage, Monitor Working Storage Area, Kernal Working Storage

Discussed in https://github.com/orgs/c128lib/discussions/14

^{Originally posted by johnpalermo February 25, 2024}
@intoinside I started a YouTube channel and was thinking about creating a repository to store files related to the channel. I've attached a spreadsheet that I refer to when I'm coding BASIC and Assembly. I find it handy as a high-level overview, like a starting point, before I dig deeper. Rather than putting it on my personal repository, was wondering if you think it would be useful on the c128lib Reference repository.
Commodore 128 Memory Management.ods

The last sheet is the one I refer to regularly. It has both hex and decimal addresses so it's easy for me to switch between BASIC/Assembly.