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-rw-r--r--src/mame/apple/macpwrbk030.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/mame/apple/macpwrbk030.cpp b/src/mame/apple/macpwrbk030.cpp
index 497cf565358..b7ad9236206 100644
--- a/src/mame/apple/macpwrbk030.cpp
+++ b/src/mame/apple/macpwrbk030.cpp
@@ -92,6 +92,14 @@
INT1: 60 Hz clock
INT2: INT2 PULLUP (pulled up and otherwise N/C)
+ PG&E (68HC05 PMU) version spotting:
+ (find the text "BORG" in the system ROM, the next 32768 bytes are the PG&E image.
+ offset +4 in the image is the version byte).
+ 01 - PowerBook Duo 210/230/250
+ 02 - PowerBook 540c, PBDuo 270C, PBDuo 280/280C
+ 03 - PowerBook 150
+ 08 - PB190cs, PowerBook 540c PPC update, all PowerPC PowerBooks through WallStreet G3s
+
****************************************************************************/
#include "emu.h"