Автор: Angelo Colucci
Год: 1988
Издатели: Your Sinclair
Языки:
Английский
Формат:
TAP лента
Требования:
ZX Spectrum 48K
Ссылки:
Страница на ZXArt
Страница на World Of Spectrum
Страница на Spectrum Computing
Скриншоты:
Год: 1988
Издатели: Your Sinclair
Языки:
АнглийскийФормат:
TAP лентаТребования:
ZX Spectrum 48KСсылки:
Страница на ZXArt Страница на World Of Spectrum Страница на Spectrum ComputingСкриншоты:
SCREEN COMPACT
by Angelo Colucci
from Your Sinclair #28 (April 1988)
[files SCOMPACT.*]
I know what you're thinking (call me Uri!). You're thinking "screen
compacting - boring! Easey-peasey-japaneasy!" I thought that as well
until I sighted Angelo Colucci's program and frankly, I was amazed. Not
only is Angelo's program the smallest, most efficient, and user-
friendly of the lot I received, but also has possibly the most visually
stunning demo you'll ever see on the Spectrum ever! Wow!
METHOD
Angelo's screen compact program is self-contained. Type in the Basic
prog and it'll tell you what to do. Type in the demo program, run it,
and leave it for about two hours, and then be prepared to be as amazed
as I was.
[The CODE file for the animation has already been generated and saved]
[in SCOMPACT.TAP . To view the animation: ]
[LOAD "DEMO" : CLEAR 25999: LOAD "FRAMES" CODE 26000 : GO TO 1000 ]
[JimG ]
HOW DOES IT DO IT?
This routine will compact most screens into under 50 percent as large.
It does this by firstly searching for a byte that is not used in the
screen and using it as a flag. Then, the routine will scan the screen
and search for 4 to 255 repeats of the same byte and it'll then compress
this repetition into 3 bytes:
1st byte = flag byte
2nd byte = number of repeats
3rd byte = value of repetition
This is clever and you can see its effect in the incredible demo which
should take up 122880 bytes but only takes 38620 bytes which is 60
percent smaller! Brilliant!
BASIC PROGRAM
This program contains the machine code and instructions on use. Type it
in and save it with SAVE "LOADER" LINE 10.
DEMO PROGRAM
This is the amazing bit. Type it in, SAVE it with SAVE "DEMO" LINE 10
[DM had a habit of always saying to "SAVE ... LINE 10", whether or not
LINE 10 existed in the listing or was the correct line from which to
auto-run. In this case it should be 2000. JimG]. Then leave it for an
hour or two. The effect is stunning.
by Angelo Colucci
from Your Sinclair #28 (April 1988)
[files SCOMPACT.*]
I know what you're thinking (call me Uri!). You're thinking "screen
compacting - boring! Easey-peasey-japaneasy!" I thought that as well
until I sighted Angelo Colucci's program and frankly, I was amazed. Not
only is Angelo's program the smallest, most efficient, and user-
friendly of the lot I received, but also has possibly the most visually
stunning demo you'll ever see on the Spectrum ever! Wow!
METHOD
Angelo's screen compact program is self-contained. Type in the Basic
prog and it'll tell you what to do. Type in the demo program, run it,
and leave it for about two hours, and then be prepared to be as amazed
as I was.
[The CODE file for the animation has already been generated and saved]
[in SCOMPACT.TAP . To view the animation: ]
[LOAD "DEMO" : CLEAR 25999: LOAD "FRAMES" CODE 26000 : GO TO 1000 ]
[JimG ]
HOW DOES IT DO IT?
This routine will compact most screens into under 50 percent as large.
It does this by firstly searching for a byte that is not used in the
screen and using it as a flag. Then, the routine will scan the screen
and search for 4 to 255 repeats of the same byte and it'll then compress
this repetition into 3 bytes:
1st byte = flag byte
2nd byte = number of repeats
3rd byte = value of repetition
This is clever and you can see its effect in the incredible demo which
should take up 122880 bytes but only takes 38620 bytes which is 60
percent smaller! Brilliant!
BASIC PROGRAM
This program contains the machine code and instructions on use. Type it
in and save it with SAVE "LOADER" LINE 10.
DEMO PROGRAM
This is the amazing bit. Type it in, SAVE it with SAVE "DEMO" LINE 10
[DM had a habit of always saying to "SAVE ... LINE 10", whether or not
LINE 10 existed in the listing or was the correct line from which to
auto-run. In this case it should be 2000. JimG]. Then leave it for an
hour or two. The effect is stunning.