It was thus said that the Great drlegendre . once stated:
> @Sean
>
> I was wondering the same, but perhaps he needs physical hardware for some
> specific purposes, like timing and so forth?
The 6502 (as well as many of the other 8-bit CPUs of that era) are
deterministic to the point where publ
> Hi
>
> There has been so much PDP and other stuff lately I kind of feel out of place
> asking about 6502 stuff.
>
> Anyway, I've mentioned on the 6502.org that QuickSort is not always the
> fastest sort. So I wrote a 6502 assembly sort but don't have a machine big
> enough to test it
>
> on. I've
I haven't had the greatest success with the Mylar blankets on my Tandy 6000
keyboards. Some of the keys would act flaky and result in garbage characters
on the screen. I had to replace those problematic keys with original discs.
But, I rebuilt a Model II keyboard where the blanket discs work
On Mon, 12 Dec 2016 23:10:57 -0700, Warner Losh wrote:
>
> On Mon, Dec 12, 2016 at 11:04 AM, Seth Morabito
> wrote:
> > Hi folks,
> >
> > I don't know if this is the best place to ask this question, but I don't
> > know of any better forums for PDP-10 discussion, so hopefully it's
> > on-topic eno
I've had good luck with Apple Lisa's, Processor Technology Sol-20s,
Dynalogic Hyperions and a TRS-80 model II keyboard. I make my own with
weather stripping (sticky on one side), two sided tape and silver gift
wrapping (mylar). I would re-use the original plastic disk (after cleaning
them up) or
On Mon, Dec 12, 2016 at 11:20 PM, Sean Conner wrote:
>
> If you have a modern system, you could always download a 6502 emulator
> and
> test it on that. Such a tactic wasn't even unheard of in the day---if I
> recall correctly, that's how Gates & Co. tested their first BASIC---on an
> emulated
> Interestingly, when I telnet from _outside_ the network to my
> firewall's port 2320, it works, but Telnet goes into line mode rather
> than character mode!
Probably, as I think someone said, telnet noticing it's not using the
standard telnet port and not even trying to go character-at-a-time.
On Tue, Dec 13, 2016 at 7:19 AM, Peter Cetinski wrote:
> I haven't had the greatest success with the Mylar blankets on my Tandy 6000
> keyboards...
I've heard of people using mylar balloons or mylar potato chip bags.
I'm sure there are some analog effects that come into play and perhaps
one type
On Tue, Dec 13, 2016 at 11:24 AM, Ethan Dicks wrote:
> On Tue, Dec 13, 2016 at 7:19 AM, Peter Cetinski wrote:
> > I haven't had the greatest success with the Mylar blankets on my Tandy
> 6000 keyboards...
>
> I've heard of people using mylar balloons or mylar potato chip bags.
> I'm sure there a
On 12/12/16 10:53 AM, Al Kossow wrote:
> I also need to dig out the chassis to see what model number mine is.
> None of the boards have Unibus connectors out the top.
>
> I also put up a couple of Megatek related documents and a product announcement
> for the 7000 on bitsavers.
>
>
I took ano
>
> > Interestingly, when I telnet from _outside_ the network to my
> > firewall's port 2320, it works, but Telnet goes into line mode rather
> > than character mode!
>
> Probably, as I think someone said, telnet noticing it's not using the
> standard telnet port and not even trying to go character
If you have a modern system, you could always download a 6502
emulator and test it on that. Such a tactic wasn't even unheard of in
the day---if I recall correctly, that's how Gates & Co. tested their
first BASIC---on an emulated 8080.
On Tue, 13 Dec 2016, drlegendre . wrote:
I was wonderi
I'm not that much into learning how to use an emulator.
I'll admit for something like this it might be fine but I find
that most are not well written for things like I/O connections,
timed events or random events.
Sometimes that is needed.
I have three volunteers so far. That should be fine.
a product spec for the 7000 is up now on bitsavers.
there are two busses, graphics and peripheral.
On 12/13/16 9:07 AM, Al Kossow wrote:
> I think that most of the backplane may just be bussed, with 16 bit adr and 32
> bit data.
>
It's the SGA (suppress go-ahead) negotiation that's necessary to avoid line
mode.
Many telnet clients don't try to negotiate any telnet options if you
connect to a non-standard port, because they assume that you're talking to
something other than a telnet server, and that you therefore want an 8-b
>
> It's the SGA (suppress go-ahead) negotiation that's necessary to avoid line
> mode.
>
> Many telnet clients don't try to negotiate any telnet options if you
> connect to a non-standard port, because they assume that you're talking to
> something other than a telnet server, and that you therefor
On Mon, Dec 12, 2016 at 10:59:36AM -0500, et...@757.org wrote:
> >Damn, you're right, that's the pinout for the Indy. I have both an Indy and
> >an Indigo with a modified ATX power supply.
>
> You're running an Indigo on ATX power supply guts? Interesting. My co-worker
> has a SGI Fuel on his desk
A friend posted an interesting map of the network as it grew (his
interest was the 1981 map) of Arpanet interconnects. They range from
the beginning to at least that map. I can't share that one both because
it's on Facebook, and because it was low quality having been bastardized
by FB and I c
On 12/13/16 4:59 PM, jim stephens wrote:
> http://www3.sympatico.ca/n.rieck/docs/vms_vs_unix.html
>
The '71 map shows the 810 connected to an IMP and no 6700 which implies to me
that the 810 was working as a TIP
http://files.eric.ed.gov/fulltext/ED097913.pdf
is interesting.
Jef Raskin and a Microdata 800 at UCSD
On 12/13/16 6:17 PM, Al Kossow wrote:
>
>
> On 12/13/16 4:59 PM, jim stephens wrote:
>
>> http://www3.sympatico.ca/n.rieck/docs/vms_vs_unix.html
>>
> The '71 map shows the 810 connected to
Session 12
https://youtu.be/XhIohWr10kU
We were happy and humbled to get a friendly visit from David Boggs (Alto
engineer, co-inventor of Ethernet) and Ron Crane (also ex-Xerox, co-founder of
3Com with Bob Metcalfe, and CHM restoration team colleague).
> On Nov 23, 2016, at 1:37 PM, Curious Ma
Hi, All,
I'm disassembling a vintage program and ran across this bit of code
that is causing emulators to hang...
MYSUB:
LD A,R
JP M, MYSUB
JR Z, MYSUB
CP 0x65
RET M
LD A, 0x32
RET
I know plenty of 8-bit assembler (mostly 6502, 1802, and a couple
others), but I'm by no means exper
On Tue, Dec 13, 2016 at 5:49 PM, Ethan Dicks wrote:
> I'm disassembling a vintage program...
>
> MYSUB:
> LD A,R...
>
> So far, this loop hangs on all three emulators I've tried - simh's
> altairz80, simcpm010 for AmigaDOS, and EMUZ80 for Raspberry Pi. I'm
> guessing none of these environments
On Tue, Dec 13, 2016 at 5:51 PM, Ethan Dicks wrote:
> On Tue, Dec 13, 2016 at 5:49 PM, Ethan Dicks wrote:
>> I'm disassembling a vintage program...
>>
>> MYSUB:
>> LD A,R...
I'm now thinking this is the RNG which is supposed to return a number
from 0-100 in most cases, for calculating probabil
From: Eric Smith
Sent: Saturday, December 10, 2016 6:38 PM
> On Fri, Dec 9, 2016 at 12:47 PM, Rich Alderson
> wrote:
>> [1] For non-PDP10 programmers: The original architecture of the PDP-6
>> and PDP-10 used an 18-bit (256KW) address space. The KI-10
>> processor added a 22-bit pager
I acquired an ADM3-A a while back from the NWA auction, and a
generous friend was able to get me the lower case ROM chip that
was "missing" from my terminal.
I set the DIP switches and installed the ROM. When I turned on the
terminal, the whole screen was filled with "`" characters before the
h
On Tue, Dec 13, 2016 at 10:49 PM, Ethan Dicks wrote:
> Hi, All,
>
> I'm disassembling a vintage program and ran across this bit of code
> that is causing emulators to hang...
>
> MYSUB:
> LD A,R
> JP M, MYSUB
> JR Z, MYSUB
> CP 0x65
> RET M
> LD A, 0x32
> RET
>
>
> I know plenty of 8
On Tue, Dec 13, 2016 at 5:50 PM, Steve Hatle wrote:
> I acquired an ADM3-A a while back from the NWA auction, and a
> generous friend was able to get me the lower case ROM chip that
> was "missing" from my terminal.
>
> I set the DIP switches and installed the ROM. When I turned on the
> termina
28 matches
Mail list logo