print80: update PUN80 ROMs to match the new protocol in abc80sim

The latest git abc80sim has a modified protocol which is intended to
be a little more robust. Update the driver ROMs to match.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

fpga/max80.qpf

@@ -19,12 +19,12 @@
 #
 # Quartus Prime
 # Version 21.1.0 Build 842 10/21/2021 SJ Lite Edition
-# Date created = 00:52:28  December 19, 2022
+# Date created = 02:47:26  December 22, 2022
 #
 # -------------------------------------------------------------------------- #
 
 QUARTUS_VERSION = "21.1"
-DATE = "00:52:28  December 19, 2022"
+DATE = "02:47:26  December 22, 2022"
 
 # Revisions
 

rv32/checksum.h

@@ -1,4 +1,4 @@
 #ifndef CHECKSUM_H
 #define CHECKSUM_H
-#define SDRAM_SUM 0xe3fd05cf
+#define SDRAM_SUM 0x6138ff71
 #endif