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noting that standard file functions work as well

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correcting target name
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bbbradsmith 2019-05-25 13:42:13 -04:00 committed by Oliver Schmidt
parent 42beb29f72
commit 4acf011fa4
1 changed files with 8 additions and 4 deletions
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12
doc/sim65.sgml
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@ -106,14 +106,18 @@ PVExit ($01)
<sect>Creating a Test in C<p>
For a C test compiled and linked with <tt/--target sim65/ the
For a C test compiled and linked with <tt/--target sim6502/ the
command line arguments to <tt/sim65/ will be passed to <tt/main/,
and the return value from <tt/main/ will become sim65's exit code.
The <tt/exit/ function may also be used to terminate with an exit code.
Exit codes are limited to 8 bits.
In addition to this, the simulator provides a set of built-in functions
The standard C library file input and output is functional,
with <tt/STDIN_FILENO/, <tt/STDOUT_FILENO/ and <tt/STDERR_FILENO/ mapped to sim65's
STDIN_FILENO, STDOUT_FILENO and STDERR_FILENO.
These utilize an underlying set of built-in virtual functions
for simple file input and output:
<tscreen><verb>
@ -127,7 +131,7 @@ for simple file input and output:
<sect>Creating a Test in Assembly<p>
Assembly tests may similarly be assembled and linked with
<tt/--target sim65/ or <tt/--target sim65c02/,
<tt/--target sim6502/ or <tt/--target sim65c02/,
and the sim65 library provides an <tt/exit/ symbol that the program may <tt/JMP/
to terminate with the current A register value as an exit code.
@ -148,7 +152,7 @@ pre-loaded with <tt/$0200/ as the start address.
<item>The <tt/exit/ address is <tt/$FFF1/.
Jumping to this address will terminate execution with the A register value as an exit code.
<item>The built-in functions are provided by 6 "paravirtualization" hooks present at
<item>The built-in functions are provided by 6 paravirtualization hooks present at
<tt/$FFF0-$FFF5/. Except for <tt/exit/, a <tt/JSR/ to one of these
addresses will return immediately after performing a special function,
intended only for use with the sim65 target C library.