freesat v sky freesat

"Java Jive" wrote in message
...
On Sun, 06 Jul 2008 23:10:16 GMT, Paul Ratcliffe
wrote:

A bit like Krusty then, 'cos a 6502 is a processor not a co-processor

True

and you don't indirectly address it.

False. It had indirect addressing modes, for example:

LDA (0000,X) ; Indirect X, opcode A1
LDA (0000),Y ; Indirect Y, opcode B1

It wasn't a very nice one to program (IMHO). I preferred the Z80
which
had a much more logical command set and many more useful registers.

Me too. That was the chip in my second micro, an Amstrad CPC6128.

The 6502 was used in the popular PET computers of the time:
http://oldcomputers.net/pet2001.html

Yes, my first micro was a closely related CBM8096, an 8032 with extra
RAM ...
http://oldcomputers.net/pet4032.html
... a pile of sh*te with such frail components that the slightest
mains surge, for example the fridge compressor switching on or off,
would take it out, and with such a buggy OS that it kept locking up.

I was very lucky to retrieve all my data off it actually. After the
last mains spike, I wasn't able to justify the enormous cost of
repair, so I advertised in Micromart: Had anyone got any junk parts
from which I could retrieve OEM components? IIRC, I was generously
sent a broken drive and a drive mainboard by a complete stranger in
Devon, from which I was able to salvage enough bits to get my drive
working. Then I built an ISA programmable interface card from a
Maplin kit for my PC, made up a cable to connect the drive, and
programmed a module for my disk format conversion program to talk to
it.

I was also able to program another module to read 5.25" floppies of a
special dual-format of my own invention to retrieve data from the
CPC6128.

Let's all thank our sainted mother-in-laws we don't have to do that
sort of thing anymore!

and then by the BBC Micro.

Now *that* was at least a decent machine, especially the Master.


Not only was it decent, if you matched it speed for speed with a modern
processor I suspect it would leave the modern stuff standing by a
country mile. It did not have a very big instruction set, but what it
had it did very quickly.


--
Woody

harrogate three at ntlworld dot com

"Bill Wright" wrote in message
...

"Ivan" wrote in message
...
I hate being a pessimist Malcolm, but have a horrible feeling that we
have probably only just touched the tip of the iceberg of the so
called economic crisis, in which case I think that Sky is going to be
one of the first things on the list of people's priorities to get the
chop when they are struggling to pay their mortgage and fuel bills.

I'd like to think so, but judging from the behaviour of people I see
every day who are already in a financial crisis the last thing some
people will do without is Sky. Here's the approximate order that I
guess this unsavoury minority shed costs.

1. Stop paying rent
2. Stop paying car tax and insurance
3. Default on HP
4. Stop buying toys for children
4. Stop buying detergents etc
5. Default on catalogue payments
6. Reduce children's clothes budget
7. Reduce their own clothes budget
8. Stop maintaining car
9. Spend less at the tattooist's
9. Drink less
10. Smoke less
11. Cancel Sky

Bill



Reminds me of the old joke:

Q What do you find on the back of every Sky dish.

A A council house

May be not so true today as it was a decade or so ago but the principle
probably still applies in the main.


--
Woody

harrogate three at ntlworld dot com

On 07/07/2008 00:10, Paul Ratcliffe wrote:

A bit like Krusty then, 'cos a 6502 is a processor not a co-processor and
you don't indirectly address it.

Well, the BBC micro did have the option of a 2nd 6502 processor
connected over the 'TUBE'.

Perhaps Krustov was talking about the indexed-indirect v.s
indirect-addressing modes?

/nostalgia

Bill Wright wrote:
"Ivan" wrote in message
...
I hate being a pessimist Malcolm, but have a horrible feeling that we have
probably only just touched the tip of the iceberg of the so called
economic crisis, in which case I think that Sky is going to be one of the
first things on the list of people's priorities to get the chop when they
are struggling to pay their mortgage and fuel bills.

I'd like to think so, but judging from the behaviour of people I see every
day who are already in a financial crisis the last thing some people will do
without is Sky. Here's the approximate order that I guess this unsavoury
minority shed costs.

1. Stop paying rent
2. Stop paying car tax and insurance
3. Default on HP
4. Stop buying toys for children
4. Stop buying detergents etc
5. Default on catalogue payments
6. Reduce children's clothes budget
7. Reduce their own clothes budget
8. Stop maintaining car
9. Spend less at the tattooist's
9. Drink less
10. Smoke less
11. Cancel Sky

12. Go to prison and get Sky for nothing.

In article ,
Silk wrote:
12. Go to prison and get Sky for nothing.

Cruel and unusual punishment.

-- Richard



--
Please remember to mention me / in tapes you leave behind.

Java Jive wrote:
On Sun, 06 Jul 2008 23:10:16 GMT, Paul Ratcliffe
wrote:

A bit like Krusty then, 'cos a 6502 is a processor not a co-processor

True

and you don't indirectly address it.

False. It had indirect addressing modes, for example:

LDA (0000,X) ; Indirect X, opcode A1
LDA (0000),Y ; Indirect Y, opcode B1

That is indirectly addressing memory not the processor.

It wasn't a very nice one to program (IMHO). I preferred the Z80
which had a much more logical command set and many more useful
registers.

Me too. That was the chip in my second micro, an Amstrad CPC6128.

I prefered the 6502, it had about 50 logically grouped instructions unlike
the Z80s 'randomness' and was rather 68xxxx and RISC like.

In article , Bill Wright
scribeth thus

"Ivan" wrote in message
...
I hate being a pessimist Malcolm, but have a horrible feeling that we have
probably only just touched the tip of the iceberg of the so called
economic crisis, in which case I think that Sky is going to be one of the
first things on the list of people's priorities to get the chop when they
are struggling to pay their mortgage and fuel bills.

I'd like to think so, but judging from the behaviour of people I see every
day who are already in a financial crisis the last thing some people will do
without is Sky. Here's the approximate order that I guess this unsavoury
minority shed costs.

1. Stop paying rent
2. Stop paying car tax and insurance
3. Default on HP
4. Stop buying toys for children
4. Stop buying detergents etc
5. Default on catalogue payments
6. Reduce children's clothes budget
7. Reduce their own clothes budget
8. Stop maintaining car
9. Spend less at the tattooist's
9. Drink less
10. Smoke less
11. Cancel Sky

Bill



I rather except that sadly .. your quite right on that..
--
Tony Sayer

uk.tech.digital-tv
Paul Ratcliffe
Sun, 06 Jul 2008 23:10:16 GMT


I would be able to provide an answer. It would be along the lines of "I
haven't a clue mate."

A bit like Krusty then, 'cos a 6502 is a processor not a co-processor and
you don't indirectly address it.


Well done old chap :-))

Tis ye olde trick of making something good that means most will just
accept it without question .


--
www.krustov.co.uk

uk.tech.digital-tv
Andy Burns
Mon, 07 Jul 2008 08:34:08 +0100


A bit like Krusty then, 'cos a 6502 is a processor not a co-processor and
you don't indirectly address it.

Well, the BBC micro did have the option of a 2nd 6502 processor
connected over the 'TUBE'.

Perhaps Krustov was talking about the indexed-indirect v.s
indirect-addressing modes?


Nope , I made up and invented the question 20 years ago to be used
whenever somebody was acting like a smartarse .


--
www.krustov.co.uk

On Mon, 7 Jul 2008 10:05:03 +0100, "Des" wrote:

Java Jive wrote:

False. It had indirect addressing modes, for example:

LDA (0000,X) ; Indirect X, opcode A1
LDA (0000),Y ; Indirect Y, opcode B1

That is indirectly addressing memory not the processor.

I think that's carrying pedantry a little far. Colloquially, one
might ask something like: "How does one indirectly address this
processor?" when what one really means is: "How does one indirectly
address *with* this processor?"

I prefered the 6502, it had about 50 logically grouped instructions unlike
the Z80s 'randomness' and was rather 68xxxx and RISC like.

Well each to his own, but I suspect it would be hard to find anyone
who's ever programmed a disassembler for both to agree with you!

And then, of course, there was the killer A0 (IIRC) opcode bug in the
6502 ...