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9 changed files with 112 additions and 153 deletions

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@ -1,43 +0,0 @@
; If you find youself needing to write to an EEPROM through a shell that isn't
; built for this, compile this dependency-less code (change memory offsets as
; needed) and run it in a USR-like fashion.
ld bc, 0x1000 ; bytecount to write
ld de, 0xd000 ; source data
ld hl, 0x2000 ; dest EEPROM memory mapping
loop:
ld a, (de)
ld (hl), a
push de ; --> lvl 1
push bc ; --> lvl 2
ld bc, 0x2000 ; Should be plenty enough to go > 10ms
ld e, a ; save expected data for verification
wait:
; as long as writing operation is running, IO/6 will toggle at each
; read attempt and IO/7 will be the opposite of what was written. Simply
; wait until the read operation yields the same value as what we've
; written
ld a, (hl)
cp e
jr z, waitend
dec bc
ld a, b
or c
jr nz, wait
; mismatch
pop bc ; <-- lvl 2
pop de ; <-- lvl 1
ld a, 1 ; nonzero
or a ; unset Z
ret
waitend:
pop bc ; <-- lvl 2
pop de ; <-- lvl 1
inc hl
inc de
dec bc
ld a, b
or c
jr nz, loop
ret ; Z already set

2
tools/.gitignore vendored
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@ -1,3 +1 @@
*.o
/memdumpb /memdumpb
/uploadb

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@ -1,22 +1,13 @@
CFLAGS ?= -Wall
MEMDUMP_TGT = memdumpb MEMDUMP_TGT = memdumpb
MEMDUMP_SRC = memdump.c MEMDUMP_SRC = memdump.c
UPLOAD_TGT = uploadb
UPLOAD_SRC = upload.c
TARGETS = $(MEMDUMP_TGT) $(UPLOAD_TGT)
OBJS = common.o
all: $(TARGETS) all: ${MEMDUMP_TGT}
.SUFFIXES: .c .o ${MEMDUMP_TGT}: ${MEMDUMP_SRC}
.c.o: ${CC} ${CFLAGS} ${MEMDUMP_SRC} -o ${MEMDUMP_TGT}
$(CC) $(CFLAGS) -c $< -o $@
$(MEMDUMP_TGT): $(MEMDUMP_SRC) $(OBJS)
$(CC) $(CFLAGS) $(MEMDUMP_SRC) $(OBJS) -o $@
$(UPLOAD_TGT): $(UPLOAD_SRC) $(OBJS)
$(CC) $(CFLAGS) $(UPLOAD_SRC) $(OBJS) -o $@
.PHONY: clean .PHONY: clean
clean: clean:
rm -f $(TARGETS) $(OBJS) rm -f ${MEMDUMP_TGT}

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@ -1,19 +0,0 @@
#include <stdlib.h>
#include <unistd.h>
void sendcmd(int fd, char *cmd)
{
char junk[2];
while (*cmd) {
write(fd, cmd, 1);
read(fd, &junk, 1);
cmd++;
// The other side is sometimes much slower than us and if we don't let
// it breathe, it can choke.
usleep(1000);
}
write(fd, "\n", 1);
read(fd, &junk, 2); // sends back \r\n
usleep(1000);
}

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@ -1,2 +0,0 @@
void sendcmd(int fd, char *cmd);

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@ -8,3 +8,4 @@
/cfsin/ed /cfsin/ed
/cfsin/basic /cfsin/basic
/cfsin/user.h /cfsin/user.h
*.o

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@ -3,12 +3,26 @@
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h> #include <unistd.h>
#include "common.h"
/* Read specified number of bytes at specified memory address through a BASIC /* Read specified number of bytes at specified memory address through a BASIC
* remote shell and dump it to stdout. * remote shell and dump it to stdout.
*/ */
void sendcmd(int fd, char *cmd)
{
char junk[2];
while (*cmd) {
write(fd, cmd, 1);
read(fd, &junk, 1);
cmd++;
// The other side is sometimes much slower than us and if we don't let
// it breathe, it can choke.
usleep(1000);
}
write(fd, "\n", 1);
read(fd, &junk, 2); // sends back \r\n
usleep(1000);
}
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
if (argc != 4) { if (argc != 4) {
@ -36,12 +50,17 @@ int main(int argc, char **argv)
for (int i=0; i<bytecount; i++) { for (int i=0; i<bytecount; i++) {
sendcmd(fd, "peek m"); sendcmd(fd, "peek m");
read(fd, s, 2); // read prompt read(fd, s, 2); // read prompt
sendcmd(fd, "puth a"); sendcmd(fd, "print a");
read(fd, s, 2); // read hex pair for (int j=0; j<3; j++) {
s[2] = 0; // null terminate read(fd, s+j, 1);
unsigned char c = strtol(s, NULL, 16); s[j+1] = 0; // always null-terminate
if (s[j] < '0') {
break;
}
}
unsigned char c = strtol(s, NULL, 10);
putchar(c); putchar(c);
read(fd, s, 2); // read prompt read(fd, s, 3); // read \r\n + prompt - last char
sendcmd(fd, "m=m+1"); sendcmd(fd, "m=m+1");
read(fd, s, 2); // read prompt read(fd, s, 2); // read prompt
} }

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@ -1,65 +0,0 @@
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include "common.h"
/* Push specified file to specified device **running the BASIC shell** and verify
* that the sent contents is correct.
*/
int main(int argc, char **argv)
{
if (argc != 4) {
fprintf(stderr, "Usage: ./upload device memptr fname\n");
return 1;
}
unsigned int memptr = strtol(argv[2], NULL, 16);
FILE *fp = fopen(argv[3], "r");
if (!fp) {
fprintf(stderr, "Can't open %s.\n", argv[3]);
return 1;
}
fseek(fp, 0, SEEK_END);
unsigned int bytecount = ftell(fp);
fprintf(stderr, "memptr: 0x%04x bytecount: 0x%04x.\n", memptr, bytecount);
if (memptr+bytecount > 0xffff) {
fprintf(stderr, "memptr+bytecount out of range.\n");
fclose(fp);
return 1;
}
rewind(fp);
int fd = open(argv[1], O_RDWR|O_NOCTTY);
char s[0x10];
sprintf(s, "m=0x%04x", memptr);
sendcmd(fd, s);
read(fd, s, 2); // read prompt
while (fread(s, 1, 1, fp)) {
putchar('.');
fflush(stdout);
unsigned char c = s[0];
sendcmd(fd, "getc");
write(fd, &c, 1);
read(fd, s, 2); // read prompt
sendcmd(fd, "puth a");
read(fd, s, 2); // read hex pair
s[2] = 0; // null terminate
unsigned char c2 = strtol(s, NULL, 16);
read(fd, s, 2); // read prompt
if (c != c2) {
// mismatch!
unsigned int pos = ftell(fp);
fprintf(stderr, "Mismatch at byte %d! %d != %d.\n", pos, c, c2);
return 1;
}
sendcmd(fd, "poke m a");
read(fd, s, 2); // read prompt
sendcmd(fd, "m=m+1");
read(fd, s, 2); // read prompt
}
printf("Done!\n");
return 0;
}

79
tools/uploadb.pl Executable file
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@ -0,0 +1,79 @@
#!/usr/bin/perl
# Push specified file to specified device **running the BASIC shell** and verify
# that the sent contents is correct.
use strict;
use Fcntl;
if (@ARGV != 3) {
print "Usage: ./uploadb.pl device memptr filename\n";
exit 1;
}
my ($device, $memptr, $fname) = @ARGV;
if (hex($memptr) >= 0x10000) { die "memptr is out of range"; }
if (! -e $fname) { die "${fname} does not exist"; }
my $fsize = -s $fname;
my $maxsize = 0x10000 - hex($memptr);
if ($fsize > $maxsize) { die "File too big. ${maxsize} bytes max"; }
my $fh;
unless (open($fh, '<', $fname)) { die "Can't open $fname"; }
my $devh;
unless (sysopen($devh, $device, O_RDWR|O_NOCTTY)) { die "Can't open $device"; }
sub sendcmd {
# The serial link echoes back all typed characters and expects us to read
# them. We have to send each char one at a time.
my $junk;
foreach my $char (split //, shift) {
syswrite $devh, $char;
sysread $devh, $junk, 1;
}
syswrite $devh, "\n";
sysread $devh, $junk, 2; # send back \r\n
}
sendcmd("m=0x${memptr}");
my $rd;
sysread $devh, $rd, 2; # read prompt
# disable buffering
$| = 1;
while (sysread $fh, my $char, 1) {
print ".";
for (my $i=0; $i<5; $i++) { # try 5 times
sendcmd("getc");
syswrite $devh, $char;
sysread $devh, $rd, 2; # read prompt
sendcmd("print a");
my $s = "";
while (1) {
sysread $devh, $rd, 1;
if ($rd !~ /\d/) { last; }
$s .= $rd;
}
sysread $devh, $rd, 3; # read prompt
if ($s == ord($char)) {
last;
} else {
if ($i < 4) {
print "Mismatch at byte ${i}! ${s} != ${ord($char)}. Retrying.\n";
} else {
die "Maximum retries reached, abort.\n";
}
}
}
sendcmd("poke m a");
sysread $devh, $rd, 2; # read prompt
sendcmd("m=m+1");
sysread $devh, $rd, 2; # read prompt
}
print "Done!\n";
close $fh;
close $devh;