Azog-Thoth@cup.portal.com (William Thomas Daugustine) (01/15/90)
Altho I do use NZ-COM (ZCPR34), I have some questions regarding it and the differences from ZCPR33 About the only difference I know of is that NZCOM is an auto-installing version of ZCPR33. What other differences are there? Or are there any other differeces? Thanx! |----------------------------------------------------------------| | Billy D'Augustine (201)989-8161 | The author is not | | Azog-Thoth@cup.portal.com | responsable for | | sun!portal!cup.portal.com!Azog-Thoth | typgraphic errors! | |----------------------------------------------------------------|
ianj@sactoh0.UUCP (Ian R. Justman) (01/16/90)
In article <25961@cup.portal.com>, Azog-Thoth@cup.portal.com (William Thomas Daugustine) writes: > > Altho I do use NZ-COM (ZCPR34), I have some questions regarding it > and the differences from ZCPR33 > > About the only difference I know of is that NZCOM is an auto-installing > version of ZCPR33. What other differences are there? Or are there > any other differeces? I would like to know too. I am running ZCPR33 on my system and thoroughly enjoying it. I _HAD_ to run it so I could use VLU. The only difference is that I downloaded it from a local BBS a while back, and don't understand how NZCOM works, nor can I presently afford it. So, I would like to know how that works, too, just for the fun of it... -- Home: Ian Justman |UUCP:(1) My CP/M machine. |"One of the few 6612 Whitsett Drive | (2) My host. |die-hard CP/M North Highlands, CA |(1) !pacbell!sactoh0!ijsys!ianj |addicts left on this (916) 344-5360 95660|(2) !pacbell!sactoh0!ianj |planet"
SAGE@LL.LL.MIT.EDU (01/17/90)
William Thomas Daugustine asked: >> Altho I do use NZ-COM (ZCPR34), I have some questions regarding it >> and the differences from ZCPR33. About the only difference I know >> of is that NZCOM is an auto-installing version of ZCPR33. What other >> differences are there? You should take a look at the files containing my columns from The Computer Journal (names like TCJ##.WZ -- and you should subscribe!). I do not remember the issue (perhaps #38), but I covered this subject in detail in one of them, the one in which NZCOM was first announced. ZCPR34 is not the same as ZCPR33; it is the next revision. The command processor in NZCOM is the same command processor that can be installed manually from the ZCPR34 source code, which is available to those who insist on doing a manual installation. Unfortunately, after more than a year, I can no longer remember what all the differences were. One is that Z34 can handle type-4 programs, those that are fully relocatable. Type-3 programs, introduced with Z33, load to a fixed address but one that may differ from 100H (a typical address is 8000H). Type-4 programs typically load as high in memory as possible in the given configuration. This address is automatically adjusted for the system size and for the presence of RSXs (resident system extensions) such as ZEX. With Z34 support was added for the new environment data that includes a complete map of which drives are supported. MAXDR (max drive) alone can not cover cases such as drives A, B, F, and G. Setting MAXDR to G left the system open to getting hung up if drive C was accessed. The new Z3ENV also has the addresses and sizes of the CCP, DOS, and BIOS (starting address only). This paves the way for advanced command processors and DOSs that are larger than those prescribed by CP/M. These are the main points, but my recollection is that the TCJ article mentioned a total of four new features. -- Jay Sage