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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Note that no code is generated by this directive, so if padding bytes are required, they must be inserted z800 defs. Normally, the first directive in a program is org, to set the starting address. This is mostly useful in combination with incbin.

People have requested to be able to overwrite the generated output. The filename is then read, until the ending quote, which is the same as the starting quote. If val is omitted, it defaults to 0. Multiple expressions, separated by commas, may be specified. Almost any name is possible without escape characters, because of the quote rules.

At the start, the current address is set to 0. If the argument of seek is greater than the current output size, the file is extended with zeros.

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Assembler directives

It is a convenience directive for defining least significant byte first two byte words, as the Z80 uses them. It allows the included binary to be “patched”.

In the following example, the output contains 4 bytes: Everything after this directive is ignored. It takes one argument, which must evaluate to a value in the first pass it may not use labels which are defined later.

At the start of each sssembleur, the code can set the starting address to the mapping address.

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

All definitions should be separated by commas. Otherwise it is not touched, which means that if you use these directives, a successfull assembler execution does asssembleur imply that all the code is correct. There is no need to do this.

After this definition, it is possible to use the macro, like this: This sets the assembler’s idea of the current address. Parts of the code can be omitted using a80 conditional statements.

It allows definition of one s80 more literal bytes, as well as strings of bytes. The first non-whitespace character after the include directive is considered the starting quote. 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.


.BYTE/.DB – z80 Heaven

This is what seek is for. The previously defined pages are not overwritten. It reserves num bytes of space and initializes them to val.

Strings of bytes should be between double quotes. Code which is not assembled is checked for a correct command. It allows any binary data to asembleur included verbatim into adsembleur output. At the end of the program, it is allowed to use the “end” directive.

It takes one or two arguments, num and val.

Org only changes the assembler’s idea of “where” it is. It z880 seek in the output file and start overwriting previous output. The argument is given in the same way as for include.

This can be used to put some comments at the end.

With these directives it is possible to define new commands, which will output defined code. Incbin stands for “include binary”. As in C but without thethis includes an other source file.