VAXstation 3520/3540

VAXstation 3520/3540
Summary
Announcement date:	10 January 1989
Codename:	Firefox
OS support (VMS):	V5.1-1
CPU Details
CPU name (VMS):	KA60
CPU name (console):	KA60
CPU module:	KA60-AA [1]
Module:	L2001 [1]
Number of processors:	2 or 4 [1]
CPU chip:	78034
FPU chip:	78134
CPU clock:	50MHz
Cache:	1KB
Secondary cache:	64KB
Compatibility mode:	No
Console processor:	CPU
Console device:	None
Memory
Minimum memory:	8MB [1]
Maximum memory:	128MB [1]
I/O
Q-bus:	1 @ 3.3MB/s [1]
BUS SCSI:	1 [1]
LAN support:	1 [1]
Performance
VUPs:	{5} {#} {10}

The VAXstation 3520/3540 and VAXstation 3820/3840 systems are workstations using a microprocessor VAX; they are built around a unique bus, the M-bus, to which is attached the CPU, main memory, a graphics adaptor, and an I/O adaptor (L2003) supporting:

• SCSI for mass storage devices
• Ethernet
• printer
• keyboard
• mouse
• modem

The other cards are:

• KA60-AA dual CPU module (VAXstation 3520/3540)

or

• KA60-BA dual CPU module (VAXstation 3820/3840)

and also:

• MS60 memory modules
  • MS60-AA (L2007-AA, 8 Mbyte)
  • MS60-BA (L2007-BA, 16 Mbyte)
  • MS60-CA (L2007-CA, 32 Mbyte)
• VCB03 video controller

An optional QBUS adaptor (L2002) for the M-bus allows use of existing QBUS peripherals.

They normally come with a VR295 Color Monitor.

References

[1] VAXstation 3520/3540 and 3820/3840 Maintenance Guide. EK-258AA-MG-003

External links

• 35x0 - documentation at Bitsavers
  • VAXstation 3520 and 3540
  • VAXstation 3520 and VAXstation 3540 Product Description
• VAXstation 3520/3540 and 3820/3840 Maintenance Guide (EK-258AA-MG-003)
• DEC VS60S-A2 3520 Mid-Range Vintage VAXStation Computer Circa 1989 - Firefox - one for sale; listing has good images of all the boards