Atari 130XE Uživatelský manuál stáhnout pdf (Strana 29)

3.2 Debugger

The software of the original

TURBO FREEZER

from 1987 had some disadvantages,

among other reasons due to size constraints. Changes were always only applied to the

frozen system state and changes to the hardware registers were only visible after resuming.

This made it hard for example to work with the RAM extension.

The extensions of the software that even been implemented over time have meanwhile

removed the majority of the original constraints. Using the direct I/O mode, the debugger

can access extensions in the custom chip area and bank switching modules directly. And

the

command allows direct control of the access to the RAM extension, the OS ROM

and the RAM under the OS ROM.

3.2.2 Command summary

The set of commands is kept minimal and is aligned with the Atari “Editor Assembler

Cartridge” which makes it similar to many other debuggers. Hence a tabular summary

of the command should suﬃce. The commands must not contain any spaces and must

start immediately behind the prompt. Only the command line can be used for input.

All changes are logged in the output area. All entries are in hexadecimal notation. By

omitting a value, memory locations or registers may be left unchanged.

Example:

C100<0A,,4D

will change the content of the memory location $100 to $0A

and of the memory location $102 to $4D. After this, the internal address counter will point

to $103. The content of the memory location $101 remains unchanged.

For all commands, the address may be omitted and the debugger will use the internal

address counter or an end address that will yield a reasonable output. The output can be

stopped at any time by pressing [S] and resumed by pressing [Q].

Q Go to freezer main menu

D start Display 8 bytes plus ATASCII characters starting at address start

D start, Display 128 bytes starting at address start

D start,end

Display memory content from address start to end

I start

Display 8 bytes plus characters in internal Atari screen code starting at address

start

I start, Display 128 bytes starting at address start

I start,end

Display memory content from address start to end

L start Disassemble starting at address start, display one screen page

L start,end

Disassemble from address start to end

DL start Display display list starting at address start

DL start,end

Display display list from address start to end

C start<byte1,byte2...

Change memory content starting at address start

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 63 64

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