On Wed, 4 Nov 1998 23:29:50 -0700 Jeffrey Chapman dahuang@geocities.com wrote:
Does anyone have an MPW project for a 2.2 VM they would like to share? Or perhaps some tips on building the VM using MPW/MrC? Squeak generated interp.c and supporting files successfully, and MPW attempts to build the VM, but reports some hangups with unused parameters.
Jeffrey,
Here are some notes I made for 2.1 - I don't know how relevant or complete they are for 2.2:
1. The VM was unable to allocate memory for the heap using
#define sqAllocateMemory(minHeapSize, desiredHeapSize) malloc(desiredHeapSize)
but worked when I used
#define sqAllocateMemory(minHeapSize, desiredHeapSize) NewPtr(desiredHeapSize)
MacsBug seemed to indicate that there was sufficient memory, but maybe this implementation of malloc() has some limits.
2. I don't seem to have
#include <MacHeaders.h>
but everything went fine when I commented it out.
3. My version of Files.h has several functions marked as obsolete and available only if a certain #define exists. As a result I got 3 or 4 missing symbols on linking. By adding
#define PBOpen(pb, async) ((async) ? PBOpenAsync(pb) : PBOpenSync(pb)) #define PBClose(pb, async) ((async) ? PBCloseAsync(pb) : PBCloseSync(pb)) #define PBRead(pb, async) ((async) ? PBReadAsync(pb) : PBReadSync(pb)) #define PBWrite(pb, async) ((async) ? PBWriteAsync(pb) : PBWriteSync(pb))
to sqMacAsyncFilePrims.c, the errors went away.
4. "qd" was undefined on linking until I added
static QDGlobals qd;
to sqMacWindow.c.
5. In sqMacSound.c, the compiler needed the (char *) on the third argument in the following before it would be happy:
MixInSamples(count, (char *) srcBufPtr, 0, (char *) &bufPlaying->dbSoundData[0], startSample);
and
MixInSamples(count, (char *) srcBufPtr, samplesInserted, (char *) &otherBuf->dbSoundData[0], 0);
6. In sqMacSound.c, the compiler complained when it tried to define an enum for true and false in the Sound.h until I moved sq.h first in line to third.
If you need a makefile, let me know - it's too geeky for public consumption.
Cheers, Bob