V ramci rubriky "Programujeme v strojovom kode II." sme
pripravili pre vas maly vianocny darcek - jeden malicky program
v strojovom kode (dlhy 144 bajtov). Pozor ! Program je urceny
specialne pre pocitace
Program je napisany tak, aby ste ho mohli bez akychkolvek
uprav priamo prepisat do lubovolnej verzie vyvojoveho systemu
MRS. Nie su v nom pouzite ziadne specialne pseudoinstrukcie
ani direktivy, takze pokial pracujete v inom systeme, urcite nebude
pre vas problem prepisat ho do tohto systemu.
Po prepisani programu a jeho prelozeni ho spustite od navestia
run. Program je uplne sebestacny, to znamena ze nevyuziva
ziadne podprogramy a sluzby operacneho systemu v pameti ROM.
Verim, ze tento program bude spestrenim vasich vianocnych
sviatkov.
org | #8000 | |
run | ld | a,#08 |
out | (#fe),a | |
ld | hl,#5aff | |
ld | de,#5afe | |
ld | bc,#0300 | |
ld | (hl),#07 | |
lddr | ||
ld | (hl),c | |
ld | b,#18 | |
lddr | ||
vesele | xor | a |
in | a,(#fe) | |
or | #e0 | |
inc | a | |
jr | nz,vesele | |
ld | hl,#4030 | |
ld | de,pf1994 | |
ld | bc,#0810 | |
vanoce | ld | a,(de) |
ld | (hl),a | |
inc | de | |
call | rok | |
djnz | vanoce | |
ld | b,#04 | |
vam | call | novy |
djnz | vam | |
ld | de,#0808 | |
praje | ld | b,e |
push | hl | |
push | bc | |
busy | call | novy |
rlc | c | |
jr | nc,#01 | |
dec | l | |
djnz | busy | |
pop | bc | |
pop | hl | |
push | hl | |
push | bc | |
soft | call | novy |
rrc | c | |
jr | nc,#01 | |
inc | l | |
djnz | soft | |
pop | bc | |
pop | hl | |
ld | a,d | |
dec | a | |
cp | #01 | |
sbc | a,a | |
and | #10 | |
add | a,e | |
ld | b,a | |
hard | call | novy |
djnz | hard | |
ld | a,#02 | |
add | a,e | |
ld | e,a | |
dec | d | |
jr | nz,praje | |
ld | (hl),#fe | |
xor | a | |
stastn | in | a,(#fe) |
or | #e0 | |
inc | a | |
jr | z,stastn | |
ret | ||
novy | ld | a,c |
or | (hl) | |
ld | (hl),a | |
rok | inc | h |
ld | a,h | |
and | #07 | |
ret | nz | |
ld | a,#20 | |
add | a,l | |
ld | l,a | |
ret | c | |
ld | a,#f8 | |
add | a,h | |
ld | h,a | |
ret | ||
pf1994 | db | #28,#10,#ba,#7c |
db | #7c,#ba,#38,#54 |
Ak sa vam nechce program prepisovat a kompilovat, tu si mozete stiahnut spustitelnu verziu
vo formatoch TAP a SNA:
stromcek.rar alebo
stromcek.zip .
V balickoch sa nachadza aj vyssie uvedeny zdrojovy text priamo skompilovatelny pomocou
SjASMPlus vratane vygenerovania
oboch spustitelnych verzii v tapke a snape.