The first VAX Introduced in 1977.
|Year Introduced:||October 1977|
|Clock Speed:||200 ns|
This was the first VAX from Digital Equipment Corporation. The VAX was the sucessor to the PDP-11, and in order to make the VAX seem more PDP-11 friendly, they retained the -11 monkier for the first VAX's, hence the 11/780 designation. The 11/780 didn't have normal firmware, instead it loaded it's microcode from floppy.
SIMH is the only known emulator for the 11/780. Simh can address up to 128Mb of ram emulating an 11/780. Also the following periphals are emulated:
- TLB Translation buffer
- MCTL0, nexus=1
- MCTL1, nexus=2
- UBA, nexus=3, autoconfiguration enab
- MBA0, nexus=8
- MBA1, nexus=9
- TODR Time of day
- DZ, address=2013E040-2013E05F*, vect
- CR, address=2013FE70-2013FE77, vecto
- LPT, address=2013FF4C-2013FF4F, vect
- RP, Massbus adapter 0, 8 units
- RL, address=2013F900-2013F909, vecto
- HK, address=2013FF20-2013FF3F, vecto
- RQ, address=2013F468-2013F46B*, no v
- RQB, disabled
- RQC, disabled
- RQD, disabled
- RY, address=2013FE78-2013FE7B*, vect
- TU, Massbus adapter 1, TM03, 8 units
- TS, address=2013F550-2013F553, vecto
- TQ, TU81 (180MB), address=2013F940-2
- XU, disabled
- XUB, disabled
More information about SIMH's VAX 11/780 emulation can be found here.
The 11/780 was to ship with VMS 1.0.
- VMS 1.0 - ?.0
- BSD (CSRG flavor)
There was also the VAX-11/785, which was an upgraded version.
|v • d • e VAX Computers, Software and Peripherals|
|Big VAXen - VAX-11/780 • VAX-11/750 • VAX-11/730 • VAX-11/785 • VAX 8600 • VAX 8650 • VAX 8500 • VAX 8530 • VAX 8550 • VAX 8700 • VAX 8800 • VAX 9000|