OT? Upper limits of FSB

Apropos of nothing, I've been confuse for some time regarding maximum clock rates for local bus. My admittedly old information, which comes from the 3rd ed. of "High Performance Computer Architecture", a course I audited, indicates a maximum speed on the order of 1ghz for very very short trace len

Re: PDP-11/45 RSTS/E boot problem

> On Jan 4, 2019, at 5:15 PM, Paul Koning wrote: > > So the likely answer is that either your INIT.BAC program, or your BASIC.RTS, > is damaged ... > Can you read the RK05 from the machinery you used to fill it originally? It > might make sense simply to read parts of it, or all of it, and v

Re: ELTRAN THE COMPILER ANY DOCS? (NOT THE SEMICONDUCTOR STUFF!)))

On 1/4/19 8:42 PM, Fred Cisin via cctalk wrote: > Would be  interesting when you find it. > Not necessarily "tiny" > Remember WATFOR?   (very impressive!) I guesss not too many numerical methods types hwere, but ELTRAN is a subroutine in the EISPACK linear programming set. Yes, it's all FORTRAN:

Re: ELTRAN THE COMPILER ANY DOCS? (NOT THE SEMICONDUCTOR STUFF!)))

Would be interesting when you find it. Not necessarily "tiny" Remember WATFOR? (very impressive!) I had a lot of fun with PDQ FORTRAN on 1620. . . . and, my reply was meant in jest. You are nothing like the fellow who told us about Valtrep. (other than the sparcity of Google hits) --

Re: ELTRAN THE COMPILER ANY DOCS? (NOT THE SEMICONDUCTOR STUFF!)))

have no idea but do have a feeling it might have been like a 'tiny fortran' Sent from AOL Mobile Mail On Friday, January 4, 2019 Fred Cisin wrote: On Sat, 5 Jan 2019, ED SHARPE via cctalk wrote: > ELTRAN THE COMPILER > ANY DOCS? ANY ONE  USED IT? > (NOT THE SEMICONDUCTOR STUFF!)) Was  it  one 

Re: PDP-11/45 RSTS/E boot problem

> On Jan 4, 2019, at 5:15 PM, Paul Koning wrote: > > So the likely answer is that either your INIT.BAC program, or your BASIC.RTS, > is damaged ... > Can you read the RK05 from the machinery you used to fill it originally? It > might make sense simply to read parts of it, or all of it, and v

Re: ELTRAN THE COMPILER ANY DOCS? (NOT THE SEMICONDUCTOR STUFF!)))

On Sat, 5 Jan 2019, ED SHARPE via cctalk wrote: ELTRAN THE COMPILER ANY DOCS? ANY ONE  USED IT? (NOT THE SEMICONDUCTOR STUFF!)) Was it one of the ones based on Valtrep? http://www.classiccmp.org/pipermail/cctalk/2017-March/033410.html -- Grumpy Ol' Fred ci...@xenosoft.

ELTRAN THE COMPILER ANY DOCS? (NOT THE SEMICONDUCTOR STUFF!)))

ELTRAN THE COMPILER ANY DOCS? ANY ONE  USED IT? (NOT THE SEMICONDUCTOR STUFF!)) ED#

Re: PDP-11/45 RSTS/E boot problem

> On Jan 4, 2019, at 6:21 PM, Fritz Mueller wrote: > > >> On Jan 4, 2019, at 6:51 AM, Paul Koning wrote: >> >> Plan B: set a breakpoint at "ERL" (040672 in your map) which is the entry >> point to the error logging code. That's where the display register is >> incremented as part of logg

Re: PDP-11/45 RSTS/E boot problem

> On Jan 4, 2019, at 6:51 AM, Paul Koning wrote: > > Plan B: set a breakpoint at "ERL" (040672 in your map) which is the entry > point to the error logging code. That's where the display register is > incremented as part of logging an error. On entry, R0 is the EMT code (a > LOG$xx code, b

Re: Microcode, which is a no-go for modern designs

On Fri, Jan 4, 2019 at 8:08 AM dwight via cctalk wrote: > May ability to understand these papers is somewhat limited. If I > understand correctly the following. > Most divide routines that I've seen allow the remainder to be 1,0,-1 > relative to the normal remainder. The answer will converge as t

Re: Microcode, which is a no-go for modern designs

May ability to understand these papers is somewhat limited. If I understand correctly the following. Most divide routines that I've seen allow the remainder to be 1,0,-1 relative to the normal remainder. The answer will converge as the error of the remainder never leaves this range. In the case

Re: PDP-11/45 RSTS/E boot problem

> On Jan 3, 2019, at 10:08 PM, Fritz Mueller via cctalk > wrote: > > >> On Jan 3, 2019, at 5:17 PM, Paul Koning wrote: >> >> So in this example, 55230 is the error logging entry point for the RK11 >> driver. ... If you have a breakpoint at this location, you'll be able to >> capture the

Re: music dec tapes? (paper)

On 01/03/2019 11:15 PM, Kyle Owen wrote: > On Thu, Jan 3, 2019, 17:48 allison wrote: > >> I don't think this album has been forgotten; I have a copy, and I >> know others with copies, too. It seems as though "Unplayed by >> Human Hands" (both versions

HP music [was: music dec tapes? (paper)]

On Thu, 3 Jan 2019, Bill Degnan wrote: I have tapes with labels [...] "Start 8 Music" (hand-written, no printed label) Speaking of PDP-8 music: there was also a music program for the HP 21xx computers. There are only absolute binary papertape images available. Does someone happen to have t