372 lines
11 KiB
Plaintext
372 lines
11 KiB
Plaintext
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#: 3206 S10/Tandy CoCo
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30-Apr-90 23:42:34
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Sb: #3194-C arrays
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Fm: Bruce MacKenzie 71725,376
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To: Mark Griffith 76070,41 (X)
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But Mark, the use of a declaration such as:
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func(array)
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int array[][6];
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is standard. I don't have K&R, but it's clearly stated in Gehani's "C: Food
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For The Educated Palate" (Gehani's with Bell Labs and states in the preface
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that he follows the C Programming Language Reference Manual). It is understood
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that what is passed is a pointer to the array and that the array is not copied
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as are normal variables. The brackets and the second dimension tell the
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compiler the pointer points to a 2D array and is partioned in six column rows.
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The COCO compiler accepts this declaration but due to a bug uses the wrong
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dimension to partion the array, ie the first rather than the second.
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By the by, I checked out your more complex declaration ie:
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int (*array)[6];
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and it compiles just fine on the COCO compiler. You are to be thanked for
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pointing out what I think is the best way to program around the bug.
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#: 3216 S10/Tandy CoCo
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01-May-90 22:16:53
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Sb: #3173-#C arrays
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Fm: Bill Dickhaus 70325,523
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To: Mark Griffith 76070,41 (X)
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Mark,
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Since you seem to have all the answers <grin>, how do I define a ointer to an
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array of pointers with a variable number of elements? I have a situation where
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I want to define an array of pointers to strings, but I don't know in advance
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how many strings I need to point to. I want to be able to malloc() the array of
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pointers, and then use a pointer to get to each element. I know how to define a
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variable array of integers, and a pointer to a fixed array of pointers to
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characters (which is how I've got it working now, just defining a large array)
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but haven't found any examples of how to define a pointer to an (undefined)
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array of pointers.
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Bill
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There are 2 Replies.
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#: 3227 S10/Tandy CoCo
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02-May-90 17:07:45
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Sb: #3216-C arrays
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Fm: Pete Lyall 76703,4230
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To: Bill Dickhaus 70325,523
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Bill -
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This may appear overly simple, but have you considered using a NULL string as
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the nth entry to indicate the end of the array(s)? Make that a NULL pointer.
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Pete
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#: 3230 S10/Tandy CoCo
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02-May-90 18:43:35
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Sb: #3216-C arrays
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Fm: Bruce MacKenzie 71725,376
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To: Bill Dickhaus 70325,523
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Bill,
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This will do what you want:
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char **sp; /* declare a pointer to a character pointer */
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sp=calloc(MAX,sizeof(char *)); /* assign it to the base of a block of
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memory to hold the pointer array */
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sp[0]="string 1";
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sp[1]="string 2"; /* now you can use your pointer as an array */
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In C array variables are pointers to the base address of the array memory, and
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any pointer may be used as an array variable so long as you assure that it
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points to a free block of memory of the appropriate size.
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#: 3207 S10/Tandy CoCo
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01-May-90 08:53:54
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Sb: #3201-#tsmon HELP!
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Fm: Pete Lyall 76703,4230
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To: Paul Rinear 73757,1413 (X)
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Paul -
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Dropping characters is a classic symptom... do you have the IRQ hack installed?
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Do you have an upgraded multipak?
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Pete
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There is 1 Reply.
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#: 3210 S10/Tandy CoCo
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01-May-90 17:42:59
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Sb: #3207-#tsmon HELP!
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Fm: Paul Rinear 73757,1413
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To: Pete Lyall 76703,4230 (X)
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The multipak is upgraded and the diode IRQ hack was done.
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Something I've always been curious about:
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I use a Disto RS-232 Superpack in slot2 as /T2. The instructions
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that came with this pack contained a modpatch for AciaPak that I've
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tried using. It has never made any difference in operations. So I don't
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use it. Do you know what the story is with that? To quote them;
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"If you are using a COCO3, the Aciapak driver can inadvertently turn
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off the interrupts via the GIME chip. A fix using modpatch will
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prevent this". They then give the patch. Doesn't seem to do anything.
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???? Paul
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There are 2 Replies.
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#: 3211 S10/Tandy CoCo
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01-May-90 17:46:36
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Sb: #3210-tsmon HELP!
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Fm: Kevin Darling (UG Pres) 76703,4227
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To: Paul Rinear 73757,1413 (X)
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Paul - the patch is a common one to ACIAPAK. If you use one of its serial
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ports, and then cease using it (so that say, /t2 deinizes), then ACIAPAK
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normally shuts off interrupts from the MPI.
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For the interrupt-driven SC-II (or any other interrupt-driven device out there
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on the MPI), this would be catastrophic. I guess they must have included the
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patch "just in case" <grin>. - kev
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#: 3212 S10/Tandy CoCo
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01-May-90 18:05:59
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Sb: #3210-#tsmon HELP!
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Fm: Pete Lyall 76703,4230
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To: Paul Rinear 73757,1413 (X)
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Paul -
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I have heard of mixed results using the diode version of the hack. The straight
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IRQ hack is simplest, and works well. Also, it is slot insensitive.
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BTW - any particular reason you're not using slot 1 (the recommended slot)?
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Pete
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There is 1 Reply.
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#: 3222 S10/Tandy CoCo
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02-May-90 12:35:47
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Sb: #3212-#tsmon HELP!
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Fm: Paul Rinear 73757,1413
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To: Pete Lyall 76703,4230 (X)
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I don't know what the "straight interrupt hack is". What I did was connect
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all the slots together on one pin (pin 8 if I remember-it's been awhile) and
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then do that diode thing. Haven't had any problems.
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Paul
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There is 1 Reply.
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#: 3226 S10/Tandy CoCo
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02-May-90 17:04:12
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Sb: #3222-tsmon HELP!
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Fm: Pete Lyall 76703,4230
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To: Paul Rinear 73757,1413 (X)
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Paul -
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The straight interrupt hack is under IRQHAK.TXT in DL2 (or DL10), I believe.
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Pete
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#: 3218 S10/Tandy CoCo
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02-May-90 00:02:47
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Sb: #3197-#tsmon HELP!
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Fm: Everett Chimbidis 76370,1366
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To: Lee Veal 74726,1752
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Can't find the dev pack (or login) in any store! No longer availble!
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There is 1 Reply.
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#: 3223 S10/Tandy CoCo
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02-May-90 13:38:36
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Sb: #3218-tsmon HELP!
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Fm: Shawn Thomas 72300,2066
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To: Everett Chimbidis 76370,1366
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Everett- The Dev Pack may be a special order item only. Check around.
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#: 3208 S6/Applications
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01-May-90 09:48:39
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Sb: Daynaform
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Fm: Butch Mooney 76702,1126
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To: ALL
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Hi,
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I'm having trouble getting Daynaform to print single line. I use a Citizen
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120D printer that works the same as a Epson. No problems using RSDOS. I have
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changed the df.init file many times and it doesn't make any difference. I
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anyone has any suggestion it would be of great help.
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Thanks, Butch
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#: 3209 S15/Hot Topics
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01-May-90 12:01:18
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Sb: #3196-#That Darn Computer!
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Fm: Paul K. Ward 73477,2004
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To: Colin Smith 73777,1360 (X)
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Colin,
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For the best price on a 2 meg upgrade, you can look around now in Computer
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Shopper. Look for SIMMs, 1 meg by 8. These are the same SIMMS used in the Mac
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ii series, so they'll remain pretty inexpensive.
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It was one of our design goals to use a lot of standard parts. The more
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standard a part is, the more reliable and cheaper it is.
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Hence, you can have a full >>3<< meg system for far less than you would think.
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BTW, we showed the MM/1 at a special meeting of folks from a Charlotte NC
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computer club -- we could have sold quite a few of 'em!
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We had a great time, and look forware to meeting with Color Computer users up
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and down the east coast.
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Paul
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There is 1 Reply.
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#: 3214 S15/Hot Topics
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01-May-90 20:54:11
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Sb: #3209-That Darn Computer!
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Fm: Steve Wegert 76703,4255
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To: Paul K. Ward 73477,2004 (X)
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Paul,
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When is the info on the new system gonna hit the mail? I'm still waiting for
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some publisihed details to drool over. Did you miss my name on the list?
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Steve
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#: 3213 S10/Tandy CoCo
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01-May-90 20:52:55
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Sb: #Home Publisher help
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Fm: Bruce Isted (UG VP) 76625,2273
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To: All
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Hi all,
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I've had a request from a local CoCo club member for a fixed printer driver
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for Home Publisher and a DMP-110 printer. Does anyone know where I can get
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such a thing? The problem is apparently due to the DMP-110's horizontal
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dots-per-inch, which is denser than most DMP printers. I'm told that circles
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print up as ovals (squished in sides), and so forth. Any help is greatly
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appreciated!
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Bruce
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There is 1 Reply.
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#: 3224 S10/Tandy CoCo
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02-May-90 13:39:59
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Sb: #3213-Home Publisher help
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Fm: Shawn Thomas 72300,2066
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To: Bruce Isted (UG VP) 76625,2273 (X)
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Bruce- Tandy is selling a disk of printer drivers thru special order for the
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Home Publisher. You might check to see if the disk includes on for the
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dmp-110.
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Shawn
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#: 3215 S14/misc/info/Soapbox
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01-May-90 22:09:07
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Sb: check it out
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Fm: Zack Sessions 76407,1524
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To: ALL
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I my latest ad in the CoCo Clipboard piqued youed interest, go to lib14 and
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download games.ar and give it a read. (Even you Shareware users of my games!)
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Zack
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#: 3217 S3/Languages
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01-May-90 22:37:23
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Sb: #3199-#F$Chain question
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Fm: Bill Dickhaus 70325,523
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To: Zack Sessions 76407,1524 (X)
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Zack,
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As Pete said, use something other than 0, since the data area is at least 256
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bytes, then leas 255,u should always work. Using 0 causes the stack to start 0
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off of U, but since the stack is used "backwards", the page preceding the one
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pointed to by U will get zapped. (You probably already know this, but in case
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someone else is wondering) a PSHS X instruction does the same thing as STX
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,--S. Whenever a register is pushed on the stack, the stack pointer is
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decremented. So the stack pointer is usually set to the end of the area to be
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used for the stack.
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Bill
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There is 1 Reply.
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#: 3225 S3/Languages
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02-May-90 16:24:39
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Sb: #3217-F$Chain question
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Fm: Zack Sessions 76407,1524
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To: Bill Dickhaus 70325,523
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Thanks, Bill, (And You TOO Pete) the leas 255,u solved the problem perfectly!
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Thanks a bunch, guys.
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Zack
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#: 3219 S10/Tandy CoCo
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02-May-90 00:06:00
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Sb: t3 help
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Fm: Everett Chimbidis 76370,1366
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To: all
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Nedd to know how to use /t3 with my second computer. I have 2 232 ports 1 for
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each computer. how do I try on into the other? 1St one has the harddrives 2nd
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dosn't.
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Any HELP?
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#: 3221 S15/Hot Topics
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02-May-90 11:07:06
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Sb: #Smoke Signal
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Fm: DOUG 72667,1433
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To: all
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Hey, did SSB go belly-up, move or just don't want to be found anymore?
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D
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There is 1 Reply.
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#: 3228 S15/Hot Topics
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02-May-90 17:10:54
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Sb: #3221-Smoke Signal
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Fm: Pete Lyall 76703,4230
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To: DOUG 72667,1433
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Doug -
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I believe SSB is still up here in Westlake Village, CA. Their building is
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supposed to be right behind mine, but I have never been over there. Try
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1-(818)-555-1212 and ask information if they are listed....
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Pete
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#: 3229 S4/MIDI and Music
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02-May-90 17:38:51
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Sb: Music
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Fm: Ches Looney 73016,1336
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To: Larry Miner 73577,256
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Larry, nice job on Entertainer and Elephant Walk (I'll look in the big job
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later). A few changes in instruments and they sound real good on my Yamaha.
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Thanks. Ches.
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Press <CR> !> |