diff options
| -rw-r--r-- | listamsb.1 | 12 | ||||
| -rw-r--r-- | listamsb.c | 16 | ||||
| -rw-r--r-- | listamsb.rst | 12 |
3 files changed, 35 insertions, 5 deletions
@@ -139,6 +139,18 @@ line \fIL\fP: EOL address \fIA\fP <= previous \fIB\fP .sp Corrupt file, or not an AMSB file. .IP \(bu 2 +line \fIL\fP is suspiciously long +.sp +The line is >128 bytes long, but less than 256. AMSB can execute +lines of this length, but it\(aqs impossible to actually enter them +in the editor, because a logical line can\(aqt be longer than 3 +screen lines. Possibly corrupted file. +.IP \(bu 2 +line \fIL\fP is impossibly long +.sp +The line is >= 256 bytes long. AMSB will crash, if you try to +LOAD the file. Corrupted file. +.IP \(bu 2 line \fIL\fP EOL address doesn\(aqt match actual line length \fIN\fP .sp Same as above: corrupt, or not AMSB. @@ -33,11 +33,13 @@ even with cart-based AMSB2 and no DOS loaded. */ #define MAX_PROGLEN 30000 -/* there should never be a valid line of BASIC longer than this many +/* there should never be a valid line of BASIC longer than MAX_LINE_LEN bytes, since there would be no way to enter it in the editor. AMSB uses the standard E: device, which limits you to 4 screen lines, or - max 120 bytes. */ + max 120 bytes. there *cannot* be a line longer than MAX_LINE_LEN_HARD, + because AMSB would crash when you try to LOAD such a program. */ #define MAX_LINE_LEN 0x80 +#define MAX_LINE_LEN_HARD 0xff /* a program whose header has a length less than MIN_PROGLEN can't be a real AMSB program. EMPTY_PROGLEN is what you get if you @@ -273,9 +275,13 @@ int next_line(void) { } if(len > MAX_LINE_LEN) { - fprintf(stderr, "%s: line %d is suspiciously long (length %d > %d)\n", - self, lineno, len, MAX_LINE_LEN); - warnings++; + int hard = len > MAX_LINE_LEN_HARD; + fprintf(stderr, "%s: line %d is %s long (length %d > %d)\n", + self, + lineno, + hard ? "impossibly" : "supiciously", + len, + hard ? MAX_LINE_LEN : MAX_LINE_LEN_HARD); } if(last_ptr != -1) { diff --git a/listamsb.rst b/listamsb.rst index bf3863b..c5177e0 100644 --- a/listamsb.rst +++ b/listamsb.rst @@ -123,6 +123,18 @@ continues processing. Corrupt file, or not an AMSB file. +- line *L* is suspiciously long + + The line is >128 bytes long, but less than 256. AMSB can execute + lines of this length, but it's impossible to actually enter them + in the editor, because a logical line can't be longer than 3 + screen lines. Possibly corrupted file. + +- line *L* is impossibly long + + The line is >= 256 bytes long. AMSB will crash, if you try to + LOAD the file. Corrupted file. + - line *L* EOL address doesn't match actual line length *N* Same as above: corrupt, or not AMSB. |