Technical data

System Overview, Continued
CPU
Components
Table 1–1 lists the major hardware components found on the
KA49 CPU module.
Table 1–1 Major Components
DC246 Central processor NVAX
Cache RAMs 256-KB Bcache —–
DC243 NDAL to CDAL I/O bus interface chip NCA
DC244 Main memory controller, with ownership
bit control
NMC
NCR 53C94 Advanced SCSI controller —–
DC541 Ethernet interface SGEC
—– 32-Byte network address ROM socketed
AM79C30A Sound generator —–
XC3090 CDAL to EDAL chip CEAC
XC4005 SCSI Quadword FIFO chip SQWF
DC7085 Quad UART DZQ11
DC509 Clock CCLK
DS1287A Time-of-Year clock TOY
Firmware ROMs (4) 512 KB; each 128 KB by 8, FLASH
programmable
—–
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