Processor board in base of drawer label: PCO 1092 Installed U309 Signetics 82S181 label: MAP 0.4A U706/ROM0L is: Texas Instruments TMS2532JDL-45 DBP8201 label: CC 0.6L U708/ROM1L is: F MBM2732-35 8136 E30 label: KDM-L 27-2-82 U709/ROMLU is: F MBM2732-35 8136 E30 label: KDM-H 27-2-82 U710/ROM0U is: Texas Instruments TMS2532JL-45 DBP8144 label: CC 0.6H