diff --git a/src/guest/bios/syscalls.c b/src/guest/bios/syscalls.c
index 02db5705..2290da5a 100644
--- a/src/guest/bios/syscalls.c
+++ b/src/guest/bios/syscalls.c
@@ -783,14 +783,17 @@ void bios_sysinfo_vector(struct bios *bios) {
        * data from the system flashrom into 0x8c000068-0x8c00007f. always call
        * this function before using the other two calls
        *
-       * 0x8c000068-6f: system_id
-       * 0x8c000070-74: system_props
-       * 0x8c000075-77: padding
-       * 0x8c000078-7f: settings
+       * r0: zero if successful
        */
       LOG_SYSCALL("SYSINFO_INIT");
 
-      uint8_t data[24];
+      /*
+       * 0x00-0x07: system_id
+       * 0x08-0x0c: system_props
+       * 0x0d-0x0f: padding (zeroed out)
+       * 0x10-0x17: settings (zeroed out)
+        */
+      uint8_t data[24] = {0};
 
       /* read system_id from 0x0001a056 */
       flash_read(flash, 0x1a056, &data[0], 8);
@@ -798,10 +801,9 @@ void bios_sysinfo_vector(struct bios *bios) {
       /* read system_props from 0x0001a000 */
       flash_read(flash, 0x1a000, &data[8], 5);
 
-      /* system settings seem to always be zeroed out */
-      memset(&data[13], 0, 11);
-
       sh4_memcpy_to_guest(dc->mem, SYSINFO_DST, data, sizeof(data));
+
+      ctx->r[0] = 0;
     } break;
 
     case SYSINFO_ICON: {
diff --git a/src/guest/holly/holly.c b/src/guest/holly/holly.c
index 2de7251d..c54762ff 100644
--- a/src/guest/holly/holly.c
+++ b/src/guest/holly/holly.c
@@ -131,7 +131,7 @@ static void holly_maple_dma(struct holly *hl) {
         break;
 
       default:
-        LOG_FATAL("holly_maple_dma unhandled pattern 0x%x", desc.pattern);
+        LOG_FATAL("holly_maple_dma unhandled pattern=0x%x", desc.pattern);
         break;
     }