loadcpm3(): set environment variable 'cpm3_scb' with base of scb (physical address)

2 files changed, 4 insertions, 1 deletions

diff --git a/avr/cmd_loadcpm3.c b/avr/cmd_loadcpm3.c
index f24ee19..6b2f62f 100644
--- a/avr/cmd_loadcpm3.c
+++ b/avr/cmd_loadcpm3.c
@@ -143,6 +143,9 @@ command_ret_t do_loadcpm3(cmd_tbl_t *cmdtp, int flag, int argc, char * const arg
 		common_base = (uint16_t) buffer[0] + (buffer[1] << 8);
 		setenv_hex(PSTR(ENV_CPM3_COMMON_BASE), common_base);
 	}
+
+	setenv_hex(PSTR(ENV_CPM3_SCB), mem_top - ((res_len - (6 - 1)) << 8) + common_base);
+
 	/* Main System Load	*/
 
 	/* Load Common Portion of System */
diff --git a/avr/main.c b/avr/main.c
index 7796a36..423b48a 100644
--- a/avr/main.c
+++ b/avr/main.c
@@ -31,7 +31,7 @@ uint8_t mcusr __attribute__ ((section (".noinit")));
 __attribute__ ((naked)) __attribute__ ((section (".init3")))
 void preset_ram (void)
 {
-	for (uint8_t *p = RAMSTART; p <= (uint8_t *) RAMEND; p++)
+	for (uint8_t *p = (uint8_t *) RAMSTART; p <= (uint8_t *) RAMEND; p++)
 		*p = 0xdd;
 
 }