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From: jimb@amdcad.UUCP
Newsgroups: net.micro.mac
Subject: Re: need new RamStart or patches to old(PATCHES for 1.21 or 1.22)
Message-ID: <12284@amdcad.UUCP>
Date: Sat, 12-Jul-86 00:04:58 EDT
Article-I.D.: amdcad.12284
Posted: Sat Jul 12 00:04:58 1986
Date-Received: Sat, 12-Jul-86 07:20:22 EDT
References: <7668@duke.duke.UUCP> <6302LTW@PSUVM>
Reply-To: jimb@amdcad.UUCP (Jim Budler)
Organization: AMD, Sunnyvale, California
Lines: 123

In article <6302LTW@PSUVM> LTW@PSUVM.BITNET writes:
>Ditto to the above request.  RamStart 1.21 (the latest version I've seen) will
>load a ram disk on my MacPlus BUT (1) varies the actual size of a presized ram
>disk as a function of the amount of cache memory installed in ram and (2) bombs
>when a system and finder are included in the same folder with it.  It is a
>great utility as it allows very large ram disks and automatic installation of a
>ram disk at startup and I would very much like to be able to use it with a
>MacPlus.  Any help would be appreciated.
>                                   Thanks, Rick Lytle, Dept. of Psych., PSU
>     
I can't help with problem (1). But for problem (2) this patch has floated
around on MAUG (Compuserve) and Usenet. I can personally state that I applied
all three patches (including the hard disk, even though I have no hard disk)
to version 1.21. 
As a result the following:

	1. If you install an autostart version on an HFS floppy, everything
	works fine, EXCEPT the floppy doesn't eject.
HOWEVER,
	2. If you install an autostart version on a 400K MFS floppy,
	everything works fine, AND the floppy ejects.
I use this mode.

One other exception?? to the everything works fine, the ramdisk is MFS.
(A side note: at one time I managed to create an HFS ramdisk with this
program, not in autostart mode, but I don't know now if it was the
patched or unpatched version, and I don't use it in the non-autostart
mode, and I haven't tried to repeat it. Just for your info)

I've used this patched version 1.21 since May, NO problems, (except
remembering to turn off the cache before using it).

From decwrl!decvax!ittatc!dcdwest!sdcsvax!ucbvax!ERNIE.BERKELEY.EDU!hamachi Thu Apr 17 18:33:45 PST 1986

Here's a reposting of information I got from the MacQ BBS:


PATCHING OF RAMSTART VERSIONS 1.21 AND 1.22 TO OPERATE WITH MAC 128K ROM'S:

	This file contains information on patching of the freeware program
RamStart, to operate correctly with the new Mac ROM's referred to above. Par-
ticularly, these patches allow the ramdisk to be used automatically at 
startup to create a new startup ramdisk containing System and Finder files.
It is this function which RamStart (and other ramdisks) lost with the advent of 
the new ROM's.

	Information on patching both versions of the program is given, since
while many BBS's here and there carry version 1.22, the most current version
available on MAUG is version 1.21.  I was going to upload a patched version 
of the program, but am not sure that's proper without the author's OK.  (I'm
simply a frustrated ramdisk user driven crazy by the inability of all current
(4/8/86) ramdisks to work automatically on startup with the new ROM's.)

	The information contained here--and all credit for getting it to MAUG--
belongs to Gary Boudreaux, CIS PPN 76344,2426, who had access to the RamStart
source and came up with these patches.

	The patching can be undertaken with MacTools, Fedit, MacZap or similar
utilities which are capable of searching for text strings and then writing 
changed ones to disk.

*************************************

	To patch version 1.21:
	In sector $0C, offset $B4, replace 4EBA 0682
                                      with 4E71 4E71
 
   	In sector $0D, offset $17A, replace 6700 0012 006E 8000
                                       with 6000 0012 006E 8000
 
If you're using a hard disk, you may need to apply the following patch (Gary
had to use it for both the Corvus and the Warp Nine):
 
   		In sector $06, offset $190, replace 41FA 0388
                                               with 6000 000C
 The symptom for this last problem is a message "can't find our drive #".

*************************************

To patch version 1.22:
	In sector $0C, offset $36, replace 4EBA 0678
                                      with 4E71 4E71
 
   	In sector $0D, offset $F8, replace 6700 0012 006E 8000
                                      with 6000 0012 006E 8000
 
If you're using a hard disk, you may need to apply the following patch (Gary
had to use it for both the Corvus and the Warp Nine):
 
   	In sector $06, offset $132, replace 41FA 0384
                                       with 6000 000A
The symptom for this last problem is a message "can't find our drive #".
 

***********************************

	To his original work, Gary added the following note: " RamStart uses a
DRVR 10, which is a problem if you're using AppleTalk.  To get around this, 
pick a driver number which isn't being used in your system file, and use 
ResEdit to change the DRVR number in RamStart (I used 11 on my system)."

	I can personally verify from a week of heavy use the flawless operation
of the patches on v.1.21, but if you get into trouble with these patches, 
you're on your own.  

	If any of you are not familiar with this excellent free ramdisk, it is 
in DL1 here as RAMSTA.BIN.  Information on its use is obtained by clicking the 
"Help" button while running the program.  PLEASE read that info.,and 
particularly note that you SHOULD NOT try to copy to another disk the System 
File which you've created on this ramdisk.  (This is different from 
Assimilation's disk, and important if--for example--you're thinking about 
updating all 200 of your old System disks with the System file from the 
ramdisk.)


-- 
 Jim Budler
 Advanced Micro Devices, Inc.
 (408) 749-5806
 Usenet: {ucbvax,decwrl,ihnp4,allegra,intelca}!amdcad!jimb
 Compuserve:	72415,1200

Once and for all: I like my Macintosh