K7SEM is fixed. The problem was that you need

option USE_DOC_MIL=1
now, not just
option USE_DOC_MIL

The latter usage led to empty streams struct.

This is a real problem, though: you can no streams for reading and the linker
will happily create an empty streams structure. Which sucks, since you don't know
why your system won't boot.

src/lib/do_inflate.c

@@ -98,6 +98,7 @@ static void flush_window(void)
 void gunzip_setup(void)
 {
 	/* common globals -- don't rely on init! */
+	printk_debug(__FUNCTION__ "\n");
 	outcnt = 0;
 	bytes_out = 0;
 	output_ptr = 0;

src/lib/malloc.c

@@ -2,7 +2,7 @@
 #include <printk.h>
 #include <subr.h>
 
-#if 1
+#if 0
 #define MALLOCDBG(x)
 #else
 #define MALLOCDBG(x) printk_spew x
@@ -28,6 +28,7 @@ void *malloc(size_t size)
 {
 	void *p;
 
+	MALLOCDBG((__FUNCTION__ " Enter, size %d, free_mem_ptr %p\n", size, free_mem_ptr));
 	if (size < 0)
 		error("Error! malloc: Size < 0");
 	if (free_mem_ptr <= 0)

src/lib/subr.c

@@ -79,6 +79,7 @@ void display(char *string)
 void error(char errmsg[])
 {
 	display(errmsg);
+	post_code(0xff);
 	while (1);		/* Halt */
 }
 
@@ -89,7 +90,8 @@ void post_code(uint8_t value)
 {
 #ifdef SERIAL_POST
 	unsigned long hi, lo;
-	rdtsc(lo, hi);
+	// DAMMIT! This just broke!
+	//rdtsc(lo, hi);
 	printk_info("POST: 0x%02x, TSC Lo: %d, Hi: %d\n",
 	       value, lo, hi);
 #endif