X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/76f079e76b11f63d0b48317dd3450ddbfab784d9..aea51b6c4c93c56715f50e64d424e1181c6d0242:/avr/cmd_boot.c

diff --git a/avr/cmd_boot.c b/avr/cmd_boot.c
index 036a041..fb533c7 100644
--- a/avr/cmd_boot.c
+++ b/avr/cmd_boot.c
@@ -275,28 +275,24 @@ command_ret_t do_go(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc,
 	}
 
 	if (z80_bus_state() & ZST_RUNNING) {
-		printf_P(PSTR("CPU already running!\n"));
-		return CMD_RET_FAILURE;
+		cmd_error(CMD_RET_FAILURE, ERUNNING, NULL);
 	}
 
 	printf_P(PSTR("Starting application at 0x%04lx ...\n"), addr);
 
 	if (addr != 0) {
-		uint8_t tmp[3];
+//		uint8_t tmp[3];
 
-		z80_bus_cmd(Request);
-		z80_read_block (tmp, 0, 3);
+		z80_bus_request_or_exit();
+//		z80_read_block (tmp, 0, 3);
 		z80_write(0, 0xc3);
 		z80_write(1, addr);
 		z80_write(2, (addr >> 8));
 
+		z80_bus_cmd(Release);
+		_delay_ms(100);
 		z80_bus_cmd(Run);
-		_delay_us(10);
-		z80_bus_cmd(M_Cycle);
-		_delay_us(10);
-		z80_bus_cmd(M_Cycle);
-		_delay_us(10);
-		z80_write_block(tmp, 0, 3);
+//		z80_write_block(tmp, 0, 3);
 	} else {
 		if (!hold)
 			z80_bus_cmd(Request);