Adapted persfile to 96K and the buffer size to fit AppleIIe

Makefile

@@ -3,30 +3,36 @@
 PROJNAME=equi
 CFILES=equi.c
 PBTDIR=platform-build-tools
+PERSFILE=PERS.DAT
 DFLAGS=
 
-desktopcc:
+desktopcc: perscopy
 	cc -std=c89 -Os -o $(PROJNAME) $(CFILES) $(DFLAGS)
 #	strip $(PROJNAME)
 
-tcc:
+tcc: perscopy
 	tcc -std=c89 -o $(PROJNAME) $(CFILES) $(DFLAGS)
 
 apple2-build:
 	cl65 --standard c89 -O -Os -t apple2 -o $(PROJNAME).apple2 $(CFILES) $(DFLAGS)
 
-apple2: apple2-build
+apple2: apple2-build perscopy
 	cp $(PBTDIR)/apple2/tpl.dsk $(PROJNAME).dsk
 	java -jar $(PBTDIR)/apple2/ac.jar -p $(PROJNAME).dsk $(PROJNAME).system sys < $$(cl65 --print-target-path)/apple2/util/loader.system
 	java -jar $(PBTDIR)/apple2/ac.jar -as $(PROJNAME).dsk $(PROJNAME) bin < $(PROJNAME).apple2
+	java -jar $(PBTDIR)/apple2/ac.jar -dos $(PROJNAME).dsk $(PERSFILE) bin < $(PERSFILE)
 
 apple2enh-build:
 	cl65 --standard c89 -O -Os -t apple2enh -o $(PROJNAME).a2enh $(CFILES) $(DFLAGS)
 
-apple2enh: apple2enh-build
+apple2enh: apple2enh-build perscopy
 	cp $(PBTDIR)/apple2/tpl.dsk $(PROJNAME)-enh.dsk
 	java -jar $(PBTDIR)/apple2/ac.jar -p $(PROJNAME)-enh.dsk $(PROJNAME).system sys < $$(cl65 --print-target-path)/apple2enh/util/loader.system
 	java -jar $(PBTDIR)/apple2/ac.jar -as $(PROJNAME)-enh.dsk $(PROJNAME) bin < $(PROJNAME).a2enh
+	java -jar $(PBTDIR)/apple2/ac.jar -dos $(PROJNAME)-enh.dsk $(PERSFILE) bin < $(PERSFILE)
+
+perscopy:
+	cp $(PBTDIR)/$(PERSFILE) $(PERSFILE)
 
 clean:
-	rm -f ./$(PROJNAME) *.dsk *.o *.apple2 *.a2enh
+	rm -f ./$(PROJNAME) $(PERSFILE) *.dsk *.o *.apple2 *.a2enh

README.md

@@ -21,7 +21,7 @@ Main features of an Equi machine:
 - Instruction ignore (II) flag;
 - 16-bit input buffer pointer;
 - 42752 bytes of main RAM (0x0000-0xa6ff), 41984 bytes of which are available for the program and data and 768 bytes hold the three stacks and necessary service registers listed above;
-- Up to 4GB flat persistent storage (tape, disk, flash etc);
+- Up to 2GB flat persistent storage (tape, disk, flash etc);
 - Serial terminal input and output;
 - Up to 65535 peripheral extension ports, including several virtual ports.
 

equi.c

@@ -59,12 +59,12 @@
 
 /* Command buffer size in bytes */
 #ifndef GPD_AREA_SIZE
-#define GPD_AREA_SIZE 6400u
+#define GPD_AREA_SIZE 5100u
 #endif
 
 /* Command buffer size in bytes */
 #ifndef CMD_BUF_SIZE
-#define CMD_BUF_SIZE 15600u
+#define CMD_BUF_SIZE 14000u
 #endif
 
 /* Maximum amount of CLT entries */
@@ -308,7 +308,7 @@ ushort crc16(const uchar* data_p, uchar length) {
 ushort persistOp(FILE *pfd, ushort maddr, ushort dataLen, ushort adl, ushort adh, uchar isWrite) {
   ushort status = 0, proc;
   if(pfd) {
-    fseek(pfd, (adh << 16) | adl, SEEK_SET);
+    fseek(pfd, ((adh&0x7fffu) << 15) | adl, SEEK_SET);
     if(isWrite) /* writing to the persistent area from the memory */
       proc = (ushort) fwrite(&flatram[maddr], 1, dataLen, pfd);
     else /* reading from the persistent area into the memory */