1 files changed, 18 insertions, 10 deletions

diff --git a/tool/p8bin2uart.c b/tool/p8bin2uart.c
index 0eec14e..14cb207 100644
--- a/tool/p8bin2uart.c
+++ b/tool/p8bin2uart.c
@@ -47,6 +47,8 @@ uint16_t mem[32768];
 int
 load(FILE *fp)
 {
+        bool binfile = false;
+        bool sawdata = false;
         enum { Addr, Data, Leader, Fetch, Skip , Start } s = Start;
         int c = 0, n, v = 0;
         uint16_t a = 0, d = 0, t = 0, u = 0;
@@ -66,7 +68,7 @@ load(FILE *fp)
                 fetch:
                         if (c == 0200) {
                                 if ((d & 0x8000) != 0) {
-                                        if ((d & 07777) != (t & 07777))
+                                        if (binfile && (d & 07777) != (t & 07777))
                                                 fprintf(stderr, "\nbad checksum %05o\n", t & 07777);
                                         else
                                                 v = 1;
@@ -77,6 +79,8 @@ load(FILE *fp)
                         u = 0;
                         if (d & 0x8000) {
                                 mem[a] = d & 07777;
+                                binfile |= sawdata;
+                                sawdata = true;
                                 a = (a & ~07777) | ((a + 1) & 07777);
                                 d = 0;
                         }
@@ -89,6 +93,7 @@ load(FILE *fp)
                         if ((c & 0300) == 0100) {
                                 u = c;
                                 a = (a & ~07777) | (c & 077) << 6;
+                                sawdata = false;
                                 s = Addr;
                                 break;
                         }
@@ -197,8 +202,8 @@ dump(unsigned int wordsperline)
 int
 main(int argc, char *argv[])
 {
-        if (argc != 3) {
-                fprintf(stderr, "usage: p8 wordsperline filename.bin\n");
+        if (argc < 3) {
+                fprintf(stderr, "usage: p8 wordsperline filename.bin|rim [... filename.bin|rim]\n");
                 exit(EXIT_FAILURE);
         }
         char *end;
@@ -207,14 +212,17 @@ main(int argc, char *argv[])
                 perror(argv[1]);
                 exit(EXIT_FAILURE);
         }
-        FILE *fp = fopen(argv[2], "rb");
-        if (!fp) {
-                perror(argv[2]);
-                exit(EXIT_FAILURE);
+        for (int i = 2; i < argc; ++i) {
+                fprintf(stderr, "Loading %s...\n", argv[i]);
+                FILE *fp = fopen(argv[i], "rb");
+                if (!fp) {
+                        perror(argv[i]);
+                        exit(EXIT_FAILURE);
+                }
+                if (!load(fp))
+                        exit(EXIT_FAILURE);
+                fclose(fp);
         }
-        if (!load(fp))
-                exit(EXIT_FAILURE);
-        fclose(fp);
         dump(wordsperline);
         exit(EXIT_SUCCESS);
 }