880
                 DOCUMENTATION FOR ZCPR8080.ASM


ZCPR808� i� a� 808� translatio� o� ZCPR� b� Richar� Conn� � Z8� �
CCP (Consol� Comman� Processor� replacemen� fo� CP/� versio� 2.2�
Bein� � long-tim� use� o� ZCPR� a� wel� a� � membe� o� th� grou�
tha� assiste� Richar� Con� wit� testin� an� developmen� o� ZCPR2� �
� wa� dismaye� a� th� though� o� havin� t� abando� i� an� retur� �
t� th� stoc� CC� whe� migratin� t� m� newly-purchase� Compupr� �
8085/8� CP� board� Inspectio� o� th� ZCPR� fil� mad� i� obviou� �
tha� i� woul� no� b� � difficul� tas� t� conver� t� 808� code� �
the result being ZCPR8080.ASM. 

Al� othe� file� i� th� ZCPR� packag� ma� b� use� i� thei� �
distributio� for� wit� th� followin� exceptions� DU2.ASM� �
LRUNZ.ASM� an� HELP2.AS� emplo� Z8� cod� a� well, and have been �
converte� t� 808� instruction� exclusivel� resultin� in�
DU2-8080.ASM� LRUN8080.ASM� an� HELP8080.ASM� � woul� appre-�
ciat� receivin� report� o� an� othe� ZCPR� utilitie� tha� d� �
not operate properly in the 8080 environment.

Caveat� On� o� Richard'� reason� fo� codin� ZCPR� i� Z8� �
instruction code i� du� to the limitation of the CCP to 800h
byte� i� length. Needles� t� say� conversion� o� al� relativ�
t� absolut� jump� an� othe� necessar� conversio� resulte� i� � �
swolle� CCP� Fortunately� severa� o� th� feature� Ric� intro- �
duced i� ZCPR� allo� � reductio� i� cod� size� M� ZCPRHDR.LI� �
customizatio� include� a� externa� CC� stac� an� FC� a� wel� a� �
enablin� th� multipl� comman� lin� feature� Eac� o� thes� �
feature� result� i� � substantia� spac� saving� i� th� CCЍ
itself b� movin� thes� buffer� t� protecte� memory� I� wa� als� �
necessar� t� disabl� SUBMI� processing� thi� i� n� rea� los� wit� �
utilitie� suc� a� ZE� available� Not� tha� ZCPR� wil� generat� a� �
error message if the 2K restriction is violated.

Pleas� sen� bu� reports� suggestions� etc� t� m� o� CP-MIG� th� �
CP/� interes� grou� o� Compuserv� a� PP� [70210,104]� t� th� �
ARPAne� (CSTRO� a� MIT-MC)� o� throug� Keit� Petersen'� Roya� Oa� �
RCPM.

					Charles H. Strom
					May 15, 1983

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