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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Folks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I found a few technical reference manuals (KA820/KA825 and VAX 6200 and 6600 series) through google search, etc. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I reviewed KA820/KA825 (VAX 82x0/83x0) tech docs and it does not use SRM firmware like KA780/KA865 processors. It uses VAXBI interface for I/O devices. I think that it can be implemented on SIMH emulator easily. I heard someone plans to implement VAX 82x0/83x0 for SIMH emulators (on track9 website) but it never happens.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I reviewed KA62A (VAX 62x0) and KA66A (VAX 66x0) tech docs and noticed that VAX 66x0 supports up to 3.5G memory access by using 32-bit addressing mode. VAX 6000 series is multiprocessing system. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>It need SRM firmware to boot system. Does anyone have a copy of KA62A and KA66A firmware?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Does anyone have any tech docs for VAXBI devices like DEBNA Ethernet, etc? I only found KDB50 user’s guide docs that provides KDB50 programming through VAXBI registers. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>NetBSD/vax supports VAXBI devices. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Tim<o:p></o:p></p></div></body></html>