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Article #14151

Re: DR DOS 5.0 and available memory

#14151
From: Frotz
Date: Wed, 29 May 1991 20:20
103 lines
7012 bytes
pclank01@ulkyvx.bitnet (Pat Lankswert) writes:

]In article <1991May23.231255.6520@cbnewse.att.com>, langev@cbnewse.att.com (steve.j.langevin) writes:
]> 
]> I just purchased DR DOS 5.0 and installed it on my hard disk.  I'm seeing
]> what looks like some discrepancies between chkdsk and mem about how
]> much memory I have available.
]> 
]> chkdsk (and PC TOOLS) say I have ~590KB available.
]> 
]> mem says I have ~613KB.
]> 

]Dr. DOS could be reporting memory that is above the 640k barrier that PCTools
 ^^^^^^^
Uh... DR DOS, not (Doctor DOS...)

]and CHKDSK think are devices.  This can especially be the case if you are
]running a '386 machine.  Look for free memory in the 640-1024k range.

Does this help?


+- Address -+- Owner --+- Size -----------+- Type ----------------------------+
|    0:0000 | -------- |  A0000h,  655360 | ------------- RAM --------------- |
+-----------+----------+------------------+-----------------------------------+
|    0:0000 | -------- |    400h,    1024 | Interrupt vectors                 |
|   40:0000 | -------- |    100h,     256 | ROM BIOS data area                |
|   50:0000 |   DR DOS |    200h,     512 | DOS data area                     |
|   70:0000 |  DR BIOS |   18D0h,    6352 | Device drivers                    |
|   70:052F | PRN      |                  |  Built-in device driver           |
|   70:0541 | LPT1     |                  |  Built-in device driver           |
|   70:0553 | LPT2     |                  |  Built-in device driver           |
|   70:0565 | LPT3     |                  |  Built-in device driver           |
|   70:0577 | AUX      |                  |  Built-in device driver           |
|   70:0589 | COM1     |                  |  Built-in device driver           |
|   70:059B | COM2     |                  |  Built-in device driver           |
|   70:05AD | COM3     |                  |  Built-in device driver           |
|   70:05BF | COM4     |                  |  Built-in device driver           |
|   70:0659 | CLOCK$   |                  |  Built-in device driver           |
|   70:0695 | CON      |                  |  Built-in device driver           |
|   70:06A7 |    A:-F: |                  |  Built-in device driver           |
|  1FD:0000 |   DR DOS |   11B0h,    4528 | System                            |
|  1FD:0048 | NUL      |                  |  Built-in device driver           |
|  318:0000 |   DR DOS |    750h,    1872 | System                            |
|  34B:0000 | EMMXXXX0 |                  |  Loadable device driver           |
|  38D:0000 |  COMMAND |    210h,     528 | Environment                       |
|  3AE:0000 | -------- |     70h,     112 | FREE                              |
|  3B5:0000 |  HISTORY |     E0h,     224 | Environment                       |
|  3C3:0000 |  HISTORY |   1DB0h,    7600 | Program                           |
|  59E:0000 |      MEM |   A520h,   42272 | Environment                       |
|  FF0:0000 |      MEM |  12D10h,   77072 | Program                           |
| 22C1:0000 | -------- |  7D3E0h,  512992 | FREE                              |
| 9FFF:0000 | EXCLUDED |  3E010h,  253968 | Upper system memory               |
+-----------+----------+------------------+-----------------------------------+
| C000:0000 | -------- |   8000h,   32768 | ------------- ROM --------------- |
| C800:0000 |      EMS |  10000h,   65536 | ---------- EMS memory ----------- |
+-----------+----------+------------------+-----------------------------------+
| D800:0000 |   EMM386 |   6000h,   24576 | EMM386 device driver code         |
+-----------+----------+------------------+-----------------------------------+
| DE00:0000 | -------- |  12000h,   73728 | ---------- Upper RAM ------------ |
+-----------+----------+------------------+-----------------------------------+
| DE00:0000 |   DR DOS |   1000h,    4096 | System                            |
| DE01:0000 | CON      |                  |  Loadable device driver           |
| DF00:0000 |   DR DOS |   30C0h,   12480 | System                            |
| DF01:0000 | PC$MOUSE |                  |  Loadable device driver           |
| E20C:0000 |   DR DOS |   3280h,   12928 | System                            |
| E20D:0000 |   DR DOS |   1E00h,    7680 |  15 Disk buffers                  |
| E534:0000 |  COMMAND |   1330h,    4912 | Program                           |
| E667:0000 | -------- |   9990h,   39312 | FREE                              |
+-----------+----------+------------------+-----------------------------------+
| F000:0000 | -------- |  10000h,   65536 | ------------- ROM --------------- |
+-----------+----------+------------------+-----------------------------------+
| FFFF:0000 |   DR DOS |   96E0h,   38624 | DR DOS kernel code                |
+-----------+----------+------------------+-----------------------------------+

+--------------------------------------------------------------------------+
|     |<------------------- Conventional memory --------------------->     |
|     0h   10000h  20000h  30000h  40000h  50000h  60000h  70000h          |
|     0K      64K    128K    192K    256K    320K    384K    448K          |
|     +-------+-------+-------+-------+-------+-------+-------+-------     |
|     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@     |
|     @@@@@@@@@@@@@@@@................****########...@@@@@@@@@********     |
|     +-------+-------+-------+-------+-------+-------+-------+------+     |
|    512K    576K    640K    704K    768K    832K    896K    960K     1MB  |
|  80000h  90000h  A0000h  B0000h  C0000h  D0000h  E0000h  F0000h 100000h  |
|     >-------------->|<-------------- Upper memory ---------------->|     |
+--------------------------------------------------------------------------+
Key:  @=RAM  *=ROM  %=Shadow ROM  #=EMS

      655,360 bytes, ( 640K), conventional memory
      632,320 bytes, ( 617K), largest available block

    3,145,728 bytes, (3072K), extended memory
    3,145,728 bytes, (3072K), extended memory used
            0 bytes, (   0K), extended memory available

--
John "Frotz" Fa'atuai	frotz@dri.com			(email@domain)
Digital Research, Inc.	uunet!drivax!frotz		(bang!email)
c/o MIS Dept.		408/647-6570 or 408/646-6287	(vmail)
80 Garden Court, CompRm	408/649-3896			(phone)
Monterey, CA  93940	408/646-6248			(fax)
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!jarthur!uunet!drivax!frotz
References: <1991May23.231255.6520@cbnewse.att.com> <1991May28.150326.381@ulkyvx.bitnet>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!jarthur!uunet!drivax!frotz
From: frotz@dri.com (Frotz)
Newsgroups: comp.sys.ibm.pc
Subject: Re: DR DOS 5.0 and available memory
Message-ID: <KJN3M5T@dri.com>
Date: 29 May 91 20:20:57 GMT
References: <1991May23.231255.6520@cbnewse.att.com> <1991May28.150326.381@ulkyvx.bitnet>
Sender: frotz@dri.com
Reply-To: frotz@dri.com
Distribution: usa
Organization: Digital Research, Monterey CA/USA or none (see also My_Desk)
Lines: 103