On 23-Mar-20 13:53, Eric Smith wrote: > On Mon, Mar 23, 2020 at 11:35 AM Robert Armstrong <b...@jfcl.com > <mailto:b...@jfcl.com>> wrote: > > > Timothe Litt <l...@ieee.org <mailto:l...@ieee.org>> wrote: > > KS10 ... The 8085 code is crammed into UV EPROMs. > > Was all of the KS CFE code in EPROM? On the 730 only a small > kernel of 8085 code (about 2K as I remember) was in ROM/EPROM and > the rest of the 8085 memory was RAM. The first thing the 8085 did > at power on was to load the rest of the 8085 code from the TU58. > That made it possible to issue updates to the CFE code as well as > the microcode. > > > All the KS10 front end 8080 code (not 8085!) was in EPROM, up to four > 2716 EPROMs for 8KB of code. There only RAM was two 2114 chips (each > 1Kx4), for 1KB of RAM. The 8080 code would load the KS10 microcode > from mass storage. > Typo on my part. You are correct, the KS CSL is an 8080. And all 4 EPROMs are full. The code uses INT instructions with a function code following to save bytes on subroutine calls. Yet it provides full remote diagnosis support, as well as a lot of RAMP (Reliability, Availability, Maintainability, and Performance) features that were a challenge on the KL. The KL has a whole 11/40 FE with an OS...
Did I mention that when one of my colleagues came back from (LCG) European DECUS when RAMP was announced, he reported that after the session a helpful customer pointed out that in Dutch, "ramp" means "disaster"...
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