ASSEMBLEUR Z80 PDF

It is a convenience directive for defining least significant byte first two byte words, as the Z80 uses them. Multiple expressions, separated by commas, may be. ZASM is a compiler/assembler and monitor (including disassembler and debugger) for the Z80 CPU. It runs under Linux (probably also. Uses. The easiest way to put data directly into your program. Note that since the z80 processor is little-endian, loading into a bit register from.

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It reserves num bytes of space and initializes them to val.

At the end of the program, it is allowed to use the “end” directive. Assemblrur previously defined pages are not overwritten. Otherwise it is not touched, which means that if you use these directives, a successfull assembler execution does not imply that all the code is correct.

At the start of each page, the code can set the starting address to the mapping assrmbleur. There is no need to do this. People have requested to be able to overwrite the generated output.

All definitions should be separated by commas. Strings of bytes should be between double quotes. If val is omitted, it defaults to 0. Incbin stands for “include binary”. It takes one or two arguments, num and val.

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assembleur z80 pour cpc &copy _prototype_ (19??)

In the following example, the output contains assemvleur bytes: It allows definition of one or more literal bytes, as well as strings of bytes. The argument is given in the same way as for include. It allows the included binary to be “patched”. Everything after this directive is ignored. Parts of the code can be omitted using these conditional statements.

.BYTE/.DB – z80 Heaven

At the s80, the current address is set to 0. The first non-whitespace character after the include directive is considered the starting quote.

This is what seek is for.

After this definition, it is possible to use the macro, like this: Code which is not assembled is checked for a correct command. The filename is then read, until the ending quote, which is the same as the starting quote. It allows any binary data to be included verbatim into the output. This can be used to put some comments at the end.

Note that no code is generated by this directive, so if padding bytes are required, they must be inserted using defs.

Org only changes the assembler’s idea of “where” it is. This is mostly useful in combination with incbin. Multiple expressions, separated by commas, may be specified. It takes one argument, which must evaluate to a value in the first pass it may assemgleur use labels which are defined later.

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With these directives it is possible to define new commands, which will output defined code. It will seek in the output file and start overwriting previous output. This sets the assembler’s idea of the current address. Almost any name is possible without escape characters, because of the quote rules.

Assembler directives

It is a convenience directive for defining least significant z0 first two byte words, as the Z80 uses them.

Using this directive more than once can be useful to create code which is to be executed at the same address, for example when the memory is mapped. Normally, the first directive in a program is org, to set the starting address.

As in C but without thethis includes an other source file. If the argument of seek is greater than aszembleur current output size, the file is extended with zeros.