mirror of
https://github.com/JorjBauer/aiie.git
synced 2025-02-05 19:31:56 +00:00
adding write support; optimizing memory for teensy
This commit is contained in:
Jorj Bauer
parent
36ce493c1e
commit
628bf23e7f
@ -7,9 +7,15 @@
|
||||
#include "fscompat.h"
|
||||
#endif
|
||||
|
||||
extern uint32_t FreeRamEstimate();
|
||||
|
||||
// Block number we start packing data bits after (Woz 2.0 images)
|
||||
#define STARTBLOCK 3
|
||||
|
||||
#ifdef TEENSYDUINO
|
||||
#define SKIPCHECKSUM
|
||||
#endif
|
||||
|
||||
#define PREP_SECTION(fd, t) { \
|
||||
uint32_t type = t; \
|
||||
if (!write32(fd, type)) \
|
||||
@ -204,13 +210,6 @@ bool Woz::skipByte(uint8_t datatrack)
|
||||
|
||||
uint8_t Woz::nextDiskBit(uint8_t datatrack)
|
||||
{
|
||||
if (!tracks[datatrack].trackData) {
|
||||
loadMissingTrackFromImage(datatrack);
|
||||
}
|
||||
|
||||
if (!tracks[datatrack].trackData)
|
||||
return 0;
|
||||
|
||||
static uint8_t head_window = 0;
|
||||
head_window <<= 1;
|
||||
head_window |= getNextWozBit(datatrack);
|
||||
@ -266,8 +265,9 @@ static bool write32(int fd, uint32_t v)
|
||||
static bool read8(int fd, uint8_t *toWhere)
|
||||
{
|
||||
uint8_t r;
|
||||
if (read(fd, &r, 1) != 1)
|
||||
if (read(fd, &r, 1) != 1) {
|
||||
return false;
|
||||
}
|
||||
*toWhere = r;
|
||||
|
||||
return true;
|
||||
@ -303,7 +303,6 @@ static bool read32(int fd, uint32_t *toWhere)
|
||||
}
|
||||
|
||||
*toWhere = ret;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -435,7 +434,9 @@ bool Woz::writeWozFile(int fdout, uint8_t subtype)
|
||||
|
||||
// FIXME: missing the WRIT chunk, if it exists
|
||||
|
||||
// Fix up the checksum
|
||||
// Fix up the checksum. Optional; the spec says it can be 0 meaning
|
||||
// "don't verify"
|
||||
#ifndef SKIPCHECKSUM
|
||||
endPos = lseek(fdout, 0, SEEK_CUR);
|
||||
crcDataSize = endPos-crcPos-4;
|
||||
crcData = (uint8_t *)malloc(crcDataSize);
|
||||
@ -458,12 +459,14 @@ bool Woz::writeWozFile(int fdout, uint8_t subtype)
|
||||
|
||||
tmp32 = compute_crc_32(crcData, crcDataSize);
|
||||
// Write it back out
|
||||
|
||||
lseek(fdout, crcPos, SEEK_SET);
|
||||
if (!write32(fdout, tmp32)) {
|
||||
fprintf(stderr, "ERROR: failed to write CRC\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
retval = true;
|
||||
|
||||
done:
|
||||
@ -479,9 +482,24 @@ bool Woz::writeWozTrack(int fdout, uint8_t trackToWrite, uint8_t imageType)
|
||||
if (imageType != T_WOZ)
|
||||
return false;
|
||||
|
||||
printf("writeWozTrack not implemented yet\n");
|
||||
// FIXME: not implemented
|
||||
return false;
|
||||
if (di.version != 2) {
|
||||
fprintf(stderr, "Don't know how to write this version of WOZ file\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
uint32_t count = tracks[trackToWrite].blockCount * 512;
|
||||
|
||||
if (lseek(fd, tracks[trackToWrite].startingBlock*512, SEEK_SET) != tracks[trackToWrite].startingBlock*512) {
|
||||
perror("Failed to seek to start of block");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (write(fd, tracks[trackToWrite].trackData, count) != count) {
|
||||
perror("write");
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
@ -532,12 +550,10 @@ bool Woz::writeDskTrack(int fdout, uint8_t trackToWrite, uint8_t imageType)
|
||||
return false;
|
||||
}
|
||||
if (!decodeWozTrackToDsk(trackToWrite, imageType, sectorData)) {
|
||||
printf("failed to decode to dsk\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (write(fdout, sectorData, 256*16) != 256*16) {
|
||||
printf("write failed\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -654,7 +670,7 @@ bool Woz::loadMissingTrackFromImage(uint8_t datatrack)
|
||||
// from the physical track
|
||||
if (datatrack >= 35) {
|
||||
// There are only 35 tracks; the remainder are blank.
|
||||
tracks[datatrack].trackData = (uint8_t *)calloc(NIBTRACKSIZE, 1);
|
||||
tracks[datatrack].trackData = NULL;
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -684,15 +700,14 @@ bool Woz::loadMissingTrackFromImage(uint8_t datatrack)
|
||||
else if (imageType == T_NIB) {
|
||||
if (datatrack >= 35) {
|
||||
// There are only 35 tracks; the remainder are blank.
|
||||
tracks[datatrack].trackData = (uint8_t *)calloc(NIBTRACKSIZE, 1);
|
||||
tracks[datatrack].trackData = NULL;
|
||||
return true;
|
||||
}
|
||||
// If the source was a NIB file, then the datatrack is directly
|
||||
// mapped 1:1 to the physical track
|
||||
uint8_t phystrack = datatrack; // used for clarity of which kind of track we mean, below
|
||||
tracks[datatrack].trackData = (uint8_t *)malloc(NIBTRACKSIZE);
|
||||
tracks[datatrack].trackData = (uint8_t *)calloc(NIBTRACKSIZE, 1);
|
||||
if (!tracks[datatrack].trackData) {
|
||||
printf("Failed to malloc track data\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -809,7 +824,7 @@ bool Woz::readWozFile(const char *filename, bool preloadTracks)
|
||||
perror("Unable to open input file");
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
// Header
|
||||
uint32_t h;
|
||||
read32(fd, &h);
|
||||
@ -1157,6 +1172,7 @@ bool Woz::readWozDataTrack(uint8_t datatrack)
|
||||
tracks[datatrack].trackData = (uint8_t *)calloc(count, 1);
|
||||
if (!tracks[datatrack].trackData) {
|
||||
perror("Failed to alloc buf to read track magnetic data");
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -1238,7 +1254,6 @@ bool Woz::readNibSectorData(uint8_t phystrack, uint8_t sector, nibSector *sector
|
||||
sectorData->sectorEpilog[2] == 0xeb) {
|
||||
// Header is integral. See if it's our sector:
|
||||
uint8_t sectorNum = de44(sectorData->sector44);
|
||||
printf("Denib: found track/sector %d/%d\n", de44(sectorData->track44), sectorNum);
|
||||
if (sectorNum != sector) {
|
||||
continue;
|
||||
}
|
||||
@ -1273,16 +1288,6 @@ bool Woz::readNibSectorData(uint8_t phystrack, uint8_t sector, nibSector *sector
|
||||
}
|
||||
}
|
||||
|
||||
/* Debugging: dump the track, b/c we failed to find a sector */
|
||||
printf("Broken NIB track:\n");
|
||||
printf("@d=(");
|
||||
for (int i=0; i<tracks[dataTrack].bitCount / 8; i+=16) {
|
||||
for (int j=0; j < 16 && j+i < tracks[dataTrack].bitCount/8; j++) {
|
||||
printf("0x%.2X, ", tracks[dataTrack].trackData[i+j]);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
printf(")\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -1421,7 +1426,7 @@ bool Woz::decodeWozTrackToNib(uint8_t phystrack, nibSector sectorData[16])
|
||||
bool Woz::decodeWozTrackToDsk(uint8_t phystrack, uint8_t subtype, uint8_t sectorData[256*16])
|
||||
{
|
||||
// First read it to a NIB; then convert the NIB to a DSK.
|
||||
nibSector nibData[16];
|
||||
static nibSector nibData[16];
|
||||
if (!decodeWozTrackToNib(phystrack, nibData)) {
|
||||
printf("failed to decode to Nib\n");
|
||||
return false;
|
||||
@ -1676,26 +1681,29 @@ bool Woz::flush()
|
||||
|
||||
// FIXME: this assumes we have an open fd, which means we didn't preload
|
||||
// the whole image
|
||||
|
||||
|
||||
bool ret = true;
|
||||
if (dataTrackDirty != -1) {
|
||||
printf("FLUSH track %d\n", dataTrackDirty);
|
||||
// From the imageType, call the appropriate function to write a track
|
||||
switch (imageType) {
|
||||
case T_WOZ:
|
||||
return writeWozTrack(fd, dataTrackDirty, imageType);
|
||||
ret = writeWozTrack(fd, dataTrackDirty, imageType);
|
||||
break;
|
||||
case T_DSK:
|
||||
case T_PO:
|
||||
return writeDskTrack(fd, dataTrackDirty, imageType);
|
||||
ret = writeDskTrack(fd, dataTrackDirty, imageType);
|
||||
break;
|
||||
case T_NIB:
|
||||
return writeNibTrack(fd, dataTrackDirty, imageType);
|
||||
ret = writeNibTrack(fd, dataTrackDirty, imageType);
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "Error: unknown imageType; can't flush\n");
|
||||
return false;
|
||||
ret = false;
|
||||
break;
|
||||
}
|
||||
// fsync(fd); // FIXME should not be needed
|
||||
}
|
||||
|
||||
dataTrackDirty = -1;
|
||||
/* NOTREACHED */
|
||||
return false;
|
||||
return ret;
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user