war of the past — ZXNet «zx.spectrum»

From Pawel Anokhin To All 29 August 1997

Hi, Zinov'ev!

░ I'm sitting, downloading the tenth megabyte of mail, reading messages out of boredom.
░ Suddenly I see - Zinov'ev Yury writes to Alex Letaev on the topic
░ war of the past. How can I not answer here?

AL>> It depends on the number of ldi: if you replace it with 2 ldi, and add djnz
AL>>, then it will be slower.

ZY> Clear pepper :))) I meant a bunch of LDI in series. Actually
ZY> I programmed a little at one time ;))

I installed 20 LDIs sequentially. There was no difference in speed.

With best regards, Pawel Anokhin.
[TEAM Orel-WarCraft II] _/_/|O.O|\_\_

From John Stunner To All 4 September 1997

Glad I found you alive, Pawel!!!
However, on Aug 29, 97 you wrote something addressed to Zinov'ev Yury:

PA> I put 20 LDI sequentially. There was no difference in speed.

I can see how you loop. And look at how long it takes you to actually draw the buffer. If there are ten frames, then it’s clear - you won’t notice the difference, 11
frames the next frame is drawn or 10.5 :)

With best wishes, John.

ps: I hope I won’t hurt your self-confidence if I recommend you how to do it.
First you need a small tablet in which will go sequentially
the source address, then the destination address for each line. Then we will get
a wonderful piece of code:

loop pop hl
pop de
ldi
...
ldi
djnz loop

pps: If you have an extra six kilobytes of memory at your disposal, then I can
recommend another, the fastest method known to me transferring
data.

===> #/FUCK/# *mUlTiMeDiA*, #/MAKE/# more $dEmOs$ ===>

From Evgeny Milun To All 9 September 1997

PA> I put 20 LDI in sequence. There was no difference in speed.
Calculate how many cycles it will be.

Good luck! Evgeny.

■ The night is shorter than the day... The day will kill me... The world of illusions is burning in it... (C) Aria.

From Andrey Mihaylow To All 10 September 1997

Greetings dear John!

Thursday September 04 1997 17:06, John Stunner crucified in front of Pawel Anokhin:

JS> loop pop hl
JS> pop de
JS> ldi
JS> ...
JS> ldi
JS> djnz loop
Good advice ;) , but what about the BC correction?
(4 screen 192x20 192x20/256=15, BC=207?)

Regards Andrey Mihaylow

... Just recovered from a trip to St. Petersburg (tnx to Larkov & Godfather)
(had to change intel to amd, who knows loudly no need to squeeze (/362.16)),
almost all the mail crashed, whoever wrote please respond.

From John Stunner To All 11 September 1997

AM> The best advice ;) ,a how to be with coppection BC ?
AM> (4 screens 192x20 192x20/256=15 , BC=207 ?)

change to dec a; jr nz,loop ;) Either even trickier - to calculate BC in advance, well i
then dhampik after ldi cycle.

With best wishes, John.

From Andrey Mihaylow To All 18 September 1997

JS>>> loop pop hl
JS>>> pop de
JS>>> ldi
JS>>> ...
JS>>> ldi
JS>>> Hopposhiy advice ;) AM>> (4 screens 192x20 192x20/256=15 , BC=207 ?)