24 May
2006
24 May
'06
2:03 a.m.
On 5/23/06, Chris M <chrism3667 at yahoo.com> wrote:
--- Tony Duell <ard at p850ug1.demon.co.uk>
wrote:
You must have had it on a cartridge. The TIM monitor _did_ come in
ROM on the BASIC 2 and BASIC 4 PETs - I was so happy when I discovered
it on my 2001-32K (sold as a 3032 in Europe) - the instructions I had
included loading TIM off of tape, but they were the instructions for
BASIC 1 (8K static) PETs.
I wrote a Scott Adams game engine using TIM - I did all the work on
paper and typed it all
in, one subroutine at a time, in hex. Eventually, I got a nicer ML
monitor with a line-at-a-time assembler/disassembler. My productivity
soared!
I _wish_ the C-64 had come with a monitor, with or without an
assembler/disassembler. It was annoying to have stuff crash to the
blue screen when I forgot to load the monitor (or there wasn't room).
-ethan
Sure a machine code monitor would have been even
nicer, but...
Agreed. One of the dandiest features of puters like
the C64. But come to think of it maybe that was on a
separate cartridge. It's been a while... 
24 May
24 May
9:59 a.m.
Ethan Dicks schrieb:
On 5/23/06, Chris M <chrism3667 at yahoo.com>
wrote:
Even more interesting, I found that several software on
tape for the PET
8K had
a TIM prepended. I remember my surprise when I found that Peter Jennings'
Microchess for the PET had some obscure SYS call. Apparently,
this was machine code, but what was there behind theBASIC SYS call? So I
peeked
at the addresses after the BASIC code to find a jump instruction leading
to about
0x800, but what was it in between? There was some fragment of pulling
registers with
PLA and PLP into some zero page memory, just looking like an interrupt
service routine
(IIRC, it was the single step BRK vector, actually).
I managed to replace the three bytes with what I thought to be required
there, something like
CLD, CLI, PLP or alike, and entered RUN - and found myself in a working
complete
TIM monitor. Using itself to adjust its memory boundaries and storing
itself on a
tape, I got a monitor program for free.
--- Tony Duell <ard at p850ug1.demon.co.uk>
wrote:
You must have had it on a cartridge. The TIM monitor _did_ come in
ROM on the BASIC 2 and BASIC 4 PETs - I was so happy when I discovered
it on my 2001-32K (sold as a 3032 in Europe) - the instructions I had
included loading TIM off of tape, but they were the instructions for
BASIC 1 (8K static) PETs. Sure a machine code monitor would have been even
nicer, but...
Agreed. One of the dandiest features of puters like
the C64. But come to think of it maybe that was on a
separate cartridge. It's been a while...
I wrote a Scott Adams game engine using TIM - I did all the work on
paper and typed it all
in, one subroutine at a time, in hex. Eventually, I got a nicer ML
monitor with a line-at-a-time assembler/disassembler. My productivity
soared!
I _wish_ the C-64 had come with a monitor, with or without an
assembler/disassembler. It was annoying to have stuff crash to the
blue screen when I forgot to load the monitor (or there wasn't room).
A common
location for monitors surviving a reset (sure one has added a RESET
button to the user port or the serial IEC port) was of course 0xc000.
This helped a lot
when hacking machine code on the C64. TIM relocated to 49152 was rather
common
for work then.
--
Holger Veit
11:53 p.m.
On 5/25/06, Holger Veit <holger.veit at ais.fraunhofer.de> wrote:
Indeed it was. I did a lot of work in the cassette buffer when things
fit, but occasionally,
I had to put code at $C000 because of the size of the project.
-ethan
I _wish_ the
C-64 had come with a monitor, with or without an
assembler/disassembler. It was annoying to have stuff crash to the
blue screen when I forgot to load the monitor (or there wasn't room).
A common location for monitors surviving a reset (sure one has added a RESET
button to the user port or the serial IEC port) was of course 0xc000.
This helped a lot when hacking machine code on the C64. TIM relocated to 49152
was rather common for work then. 
11:17 a.m.
I _wish_ the C-64 had come with a monitor, with or
without an
assembler/disassembler. It was annoying to have
stuff crash to the
blue screen when I forgot to load the monitor (or
there wasn't room).
-ethan
Yeah, the memories are a wee bit clearer. I never
installed JiffyDos, but I had the Warpspeed cartridge
and that's about all IIRC. Perhaps that had the mlmon
on it.
I've recently located a book I bought on ML/AL for
the C64, about the time when I stopped using it
altogether. Don't remember the exact title, but AIR it
had cartoonish characters (ASCII) on the cover or
something. I bring it up because there are a few C64
titles I'm looking for, so I'd be interested in
trades. I have a few other things also. Also looking
for a 1802? monitor for a an authentic original C64
setup. It's got to be in exceedingly lovely shape
though ;). Possibly interested in a 1902 also.
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27 May
27 May
7:48 a.m.
Also looking
for a 1802? monitor for a an authentic original C64
setup. It's got to be in exceedingly lovely shape
though ;). Possibly interested in a 1902 also.
I think you'd probably want a 1702, actually. The 1702 matches the breadbox
colours better, and the 1802 is an absolutely sucky disaster as a monitor
anyway (poorer picture, dismal reliability).
--
--------------------------------- personal: http://www.armory.com/~spectre/ ---
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser at floodgap.com
-- Eeny, Meeny, Jelly Beanie, the spirits are about to speak! -- Bullwinkle ---
12:50 p.m.
On Saturday 27 May 2006 07:48 am, Cameron Kaiser wrote:
Worse yet is that there were more than one version of the 1802, by completely
different mfrs with completely different innards...
I remember some common regulator failures on those.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
Also looking
for a 1802? monitor for a an authentic original C64
setup. It's got to be in exceedingly lovely shape
though ;). Possibly interested in a 1902 also.
I think you'd probably want a 1702, actually. The 1702 matches the breadbox
colours better, and the 1802 is an absolutely sucky disaster as a monitor
anyway (poorer picture, dismal reliability).
6636
days inactive
6639
days old
5 comments
5 participants
participants (5)
-
chrism3667＠yahoo.com -
ethan.dicks＠gmail.com -
holger.veit＠ais.fraunhofer.de -
rtellason＠blazenet.net -
spectre＠floodgap.com