"SMPC I/F User's Manual"
■No. 1 : [Delete]・Summary
■No. 2 : [Edit]・Details
■No. 3 : [Delete]・Data specifications

 "Backup Library User's Manual"
■No. 1 : [Modification]・Guide

 "File System User's Manual"
■No. 1 : [Modification]・5. Access method・(3) Read ahead to CD buffer 
■No. 2 : [Addition]・6. Other functions
■No. 3 : [Modification]・7. Data specifications
■No. 4 : [Modification]・7. Data specifications
■No. 5 : [Addition]・7 .Data specifications
■No. 6 : [Addition]・Appendix A
■No. 7 : [Deleted]・Appendix A
■No. 8 : [Addition]・Appendix A
■No. 9 : [Correction]・Appendix B
■No.10 : [Deleted]・Appendix C


"Stream System User's Manual"
■No. 1 : [Addition]・5. Stream access example
■No. 2 : [Addition]・7. Function specifications
■No. 3 : [Delete]・Appendix A


"MPEG Library User's Manual"
■No. 1 : [Add]・4. How to use the library
■No. 2 : [Add]・4. How to use the library
■No. 3 : [Add]・10.2.2 Error code
■No. 4 : [Addition]・10.2.2 Error code
■No. 5 : [Addition]・12.1 MPEG system control
■No. 6 : [Addition]・12.1 MPEG system control
■No. 7 : [Addition]・12.1 MPEG system control

 "Branch playback library user's manual"
■No. 1 : [Addition]・3. Mechanism of branch playback library

 "VDP2 Library User's Manual"
■No. 1 : [Addition]・
■No. 2 : [Addition]・


"PCM/ADPCM playback library user's manual"
■No. 1 : [Addition]・
■No. 2 : [Addition]・2. Specifications
■No. 3 : [Addition]・2. Specifications
■No. 4 : [Addition]・2. Specifications
■No. 5 : [Addition]・2. Specifications
■No. 6 : [Addition]・3. Playback procedure
■No. 7 : [Modification]・3. Playback procedure
■No. 8 : [Addition]・4. Programming notes
■No. 9 : [Addition]・4. Programming notes
■No.10 : [Addition]・4. Programming precautions
■No.11 : [Delete]・6. Function specifications
■No.12 : [Addition]・6. Function specifications
■No.13 : [Addition]・6. Function specifications
■No.14 : [Addition]・6. function specification

 "Virtual CD System User's Manual"
■No. 1 : [Addition]・2. Setup
■No. 2 : [Modification]・CD emulation software edition
■No. 3 : [Modification]・CD emulation software edition
■No. 4 : [Modification]・Second Chapter CD emulation operating procedure
■No. 5 : [Modification]・Chapter 2 CD emulation operating procedure



"SMPC I/F User's Manual"
■No. 1: [Delete]・Overview
↓p15
" ■Delete the following sentences in Features
-------------------
・Significantly reduces the burden on the main CPU
------------------

■No. 2: [Modification]・SMPC I/F User's Manual・Details
↓p17
"■Function・●System management Changed the caution

Incorrect
 [Note] Clock changes 320 and 352 are available in the system library.

Correct
------------------------
(!)
It is prohibited to issue clock change commands directly to SMPC.
If you wish to use it, please use the SYS_CHGSYSCK() function in the system library.
------------------------

■No. 3: [Delete]・SMPC I/F User's Manual・Data Specifications
↓p24
6.1 Delete numbers 11 to 18 from the data list
========================================================


■No. 1: [Modification]・Backup Library User's Manual/Guide
↓p40
Modified "■Program description example
Incorrect
 Uint32 BackUpRamWork[2048]
Correct
 Uint32 BackUpRamWork[2048+30];     /* 2048=Block access table */
                                    /*   30=Backup library variable area */
========================================================

■No. 1: [Modification]・File system user's manual・5. Access method・(3) Read ahead to CD buffer
↓p18
Replacing the sample program for "(3) Read ahead to CD buffer
Incorrect
 <Omitted>
Correct
-------------------------------------
[example]
#define SECT_SIZE     2048
#define FILE_SECT     1000
#define FILE_SIZE     (FILE_SECT*SECT_SIZE)
#define RD_UNIT       10

Uint8 *rd_bp, *proc_bp;              /* Read buffer and processing buffer */
Uint32 buf1[RD_UNIT*SECT_SIZE/4];    /* Data storage area 1 */
Uint32 buf2[RD_UNIT*SECT_SIZE/4];    /* Data storage area 2 */
GfsHn gfs;
Sint32 i, stat, nbyte;

gfs = GFS_Open(fid);
GFS_NwCdRead(gfs, FILE_SECT);        /* Pre-read instruction to CD buffer */
GFS_SetTransPara(gfs, RD_UNIT);      /* Extract maximum RD_UNIT sectors at once */
for (i = 0; i < FILE_SECT / RD_UNIT; ++i) {
     /* Read and process buffer settings */
     if (i & 1) {
         rd_bp = buf1;
         proc_bp = buf2;
     } else {
         rd_bp = buf2;
         proc_bp = buf1;
     }
     /* Execute extraction from CD buffer */
     GFS_NwFread(gfs, RD_UNIT, rd_bp, RD_UNIT * SECT_SIZE);
     do {
         if (i & 0) {
             user_process(proc_bp);   /* Processing the read data */
         } else {
             user_process0();         /* Processing before data is read */
         }
           GFS_NwExecOne(gfs);
           GFS_NwGetStat(gfs, &stat, &nbyte);
     }while (nbyte < RD_UNIT * SECT_SIZE);
}
-------------------------------------

■No. 2: [Addition]・File system user's manual・6.Other functions
↓p21
" 6.4 CD-DA file processing function"
" 6.5 DDS system compatible"

■No. 3: [Modification]・File system user's manual・7.Data specifications
↓p23
Number 2.6 in “ Table 7.1 Data List”
Incorrect
 GFS_TRANS_
Correct
 GFS_TMODE_

■No. 4: [Modification]・File system user's manual・7.Data specifications
↓p27
" No2.6 GFS_TMODE_~"
Incorrect
 DataName
  GFS_TRANS_
Correct
 DataName
  GFS_TMODE_

■No. 5: [Addition]・File system user's manual・7.Data specifications
↓p27
"No2.6 GFS_TMODE_~" Added explanation of constant name
Incorrect
 │ GFS_TMODE_SCU│ DMA transfer (level 0) by SCU │
Correct
 │ GFS_TMODE_SCU│ DMA transfer (level 0) by SCU             │
 │              │*If the transfer destination is WORKRAM-L, │
 │              │it will be a software transfer.            │
■No. 6: [Addition]・File system user's manual・Appendix A
↓p43
Added explanation for "●Memory file usage declaration"

 GFMC_base is defined as follows.
 Sint8 *GFMC_base = 0;

-----------------------addition-------------------
 The variable GFMC_base is defined in both sega_gfs.lib and segadgfs.lib.
 GFMC_base in sega_gfs.lib exists only for compatibility with segadgfs.lib.
 It does not affect file system operation.
----------------------------------------------
Please refer to the CD Tools manual for MFCAT.EXE.

■No. 7: [Delete]・File system user's manual・Appendix A
↓p44
Delete the following items in "A.3 Notes"
 Delete the entire text "When not using CD-ROM"

■No. 8: [Addition] - File System User's Manual - Appendix A
↓p44
Added the following items in "A.3 Notes"

---------------------------
●Restrictions when using DOS files
Due to processing reasons, the DOS file extraction parameters can only transfer one sector at a time.
Setting the retrieval parameter to a value other than 1 has no effect.

●Limitations on available functions
When the transfer mode is GFS_TMODE_SCU or when SCU-DMA is started in the transfer function,
Only the following functions can be used until the transfer is completed.
Since A-Bus access is prohibited during SCU_DMA transfer, use of other functions is prohibited.
・GFS_Reset
・GFS_Close
・GFS_NwIsComplete
・GFS_NwExecOne
・GFS_NwExecServer
・GFS_GetErrStat 
---------------------------

■No. 9: [Modification]・File system user's manual・Appendix B
↓p46
Changed the response to "GFS_ERR_CDOPEN"
Incorrect
 <Omitted>
Correct
 handle:
---------------------------------
Call SYS_EXECDMP() to return to multiplayer.
 
Even when the DCHG bit (bit5) of the CD block interrupt factor register (HIRQREQ) is 1, it is treated
as the tray being open. During development, please check that the CD status is not open and clear the
DCHG bit before calling GFS_Init. In the production version, the BOOT ROM clears the DCHG flag, so the
application should not clear it.
---------------------------------

■No.10: [Delete]・File system user's manual・Appendix C
↓p48
The full text is reflected in the manual.


========================================================


■No. 1: [Addition]・Stream System User's Manual・5. Stream Access Example
↓p66
Added below " Figure 5.3 Operation when using transfer function " in " 5.1 Basic program "
-------------------------- ---------
(4) Closing a stream that has a transfer function registered If you close the stream immediately after the
transfer function returns (-1), the stream system will continue to call the transfer function until the transfer
function returns a value greater than or equal to 0. Please return a value greater than or equal to 0 when the
transfer is complete.
-----------------------------------

■No. 2: [Addition]・Stream System User's Manual・7.Function Specifications
↓p88
Function value of "STM_NwSetExecGrp" in "7.7 Stream Server Execution"
Incorrect
 FALSE│If the process is not accepted
Correct
 FALSE│If processing is not completed
■ No. 3: [Delete] - Stream System User's Manual - Appendix A
↓p95
Delete the following items in "A.1 Specification changes after stream system Ver.1.10"
Incorrect
----------------------
 (1) Changes in function specifications ←Delete
 (2) Operation during loop playback ←Delete
 (3) Transfer settings
 (4) Handling of various files
----------------------
Correct
----------------------
 (1) Transfer settings
 (2) Handling of various files
----------------------


========================================================


■No. 1: [Addition]・MPEG Library User's Manual・4. How to use the library
↓p108
Added below " Figure 4.3 MPEG handle state transition diagram " in " 4.5 State transition "
--------------------
c. Operation of playback stop function
  1. If the decoder is initialized within the playback stop function, MPEG screen display is set to ON in the library.
  2. Clear the VBV buffer in the MPG_MvStop function, MPG_MvStopVideo function, and MPG_SpStop function.
  3. When video playback is stopped, the next stream is canceled to the MPEG system.
---------------------

■No. 2: [Addition] - MPEG Library User's Manual - 4. How to use the library
↓p109
" 4.7 Registering user transfer function "
Incorrect
 Omitted
Correct
-------------------------
[Format] Sint32 trFunc(void *dst, void *src, Sint32 nbyte)
[Input]  dst    : Transfer destination address
         src    : Transfer source address
         nbyte  : Number of transfer bytes
[Function value]  Error code
  1. dst contains the address of the transfer area set by the MPG_WnSetOutputMode function.
  2. The transfer function is called from the MPEG library when the MPG_WnTrans function is executed.
  3. Use the MPG_WnEntryTrFunc function to register a transfer function.
  4. The DMA transfer function from SCU to B-Bus is registered as a transfer function by default.
  5. The default transfer function will time out in approximately 2 seconds if the DMA transfer is not completed.
-------------------------

■No. 3: [Added]・MPEG Library User's Manual・10.2.2 Error Code
↓p120
Addition of " No2.0 error code " constant
----------------------------
MPG_ERR_ILLSTAT ｜ Handle is not operational
MPG_ERR_ENTRYNG ｜ Failed to register the next video
MPG_ERR_ILLHDL  ｜ Invalid handle used
MPG_ERR_CREATE  ｜ Failed to create handle
MPG_ERR_GETTC   ｜ Failed to get timecode
MPG_ERR_DESTROY ｜ Failed to delete handle
MPG_ERR_WAIT    ｜ MPEG command execution became WAIT
----------------------------

■No. 4: [Added]・MPEG Library User's Manual・10.2.2 Error Code
↓p121
Add the following data
" No3.5 MpgErrFunc "
" No3.6 MpgErrStat "


■No. 5: [Addition]・MPEG Library User's Manual・12.1 MPEG System Control
↓p125
Added (c) to " No1.1 MPG_Init " notes
--------------------------------------
 (c) After executing the GFS_Init function, executing this function will clear the ECC/retry count. Please reset
 the settings after executing this function as shown below.

 CDC_CdInit(0,0,0x05,0x0f);
--------------------------------------


■No. 6: [Addition]・MPEG Library User's Manual・12.1 MPEG System Control
↓p127
Added a note to " No1.5 MPG_IsDecReady " notes
---------------------------------------------------
(!) In principle, this function can only be used when decoding the first picture.
    Subsequent decoding can be used in streams with a picture period of M≦3 (excluding the last 3 frames
    of the stream), but is generally prohibited.
--------------------------------------

■No. 7: [Addition]・MPEG Library User's Manual・12.1 MPEG System Control
↓p128
Add the following function
" No1.11 MPG_GetErrStat "
" No1.12 MPG_SetErrFunc "


========================================================


■No. 1: [Addition] - Branch playback library user's manual - 3. Mechanism of branch playback library
↓p5
Added notes to " 3.1 Processing Flow "
----------------------
 Notes 
The same stream must not exist within one branch candidate. Even if you open the same stream with different stream
handles, the data will not be read at the same time. The stream opened later is connected to the end of the aperture,
so data can be retrieved from the stream opened earlier. Therefore, it does not matter if the same stream as the current
one exists in the branch candidate. 
 
《Example of Figure 3.2》 
- The same stream must not be duplicated in bstm6 to bstm8, but there may be the same stream as bstm2. 
---------------------

========================================================


■No. 1: [Addition]・VDP2 Library User's Manual
↓p49
" Figure 2 When using 5 displayable screens of VDP2 "
Incorrect
┃VRAM B0      ┃ ├───────────────────────┤NBG1
┃             ┃ │16 color bitmap data   │    
┃             ┃ │(512×256)0.5Mbit       │    
┣━━━━━━━━━━━━━┫ ┝━━━━━━━━━━━━━━━━━━━━━━━┥NBG2
┃VRAM B1      ┃ │Character pattern data │    
┃             ┃ │Pattern name data      │    
┃             ┃ ├───────────────────────┤NBG3


Correct
┃VRAM B0      ┃ ├───────────────────────┤NBG2
┃             ┃ │Character pattern data │    
┃             ┃ │Pattern name data      │    
┣━━━━━━━━━━━━━┫ ┝━━━━━━━━━━━━━━━━━━━━━━━┥NBG1
┃VRAM B1      ┃ │16 color bitmap data   │    
┃             ┃ │(512×256)0.5Mbit       │    
┃             ┃ ├───────────────────────┤NBG3


■No. 2: [Addition]・VDP2 Library User's Manual
↓p59
Added to the sample of "Data specification SclLineParam"

 /*          SCL_4_LINE	                                        */
 /*               Set in line scroll data table every 4 lines   */

--------------addition------------
 /*          SCL_8_LINE                                         */
 /*               Set in line scroll data table every 8 lines   */
------------------------------


========================================================


■No. 1: [Addition]・PCM/ADPCM playback library user's manual
↓p105
" 1.2 Features "
Incorrect:
 Supports three types of file formats 

Correct:
 Supports four types of file formats 
 1.AIFF format (PCM uncompressed) 
 2.CD-ROM XA Audio format (ADPCM compression) 
 3.Specified ADPCM format (CRC Research Institute AudioStack output format)
 4.SaturnPCM format (PCM uncompressed) ←Additional notes

■No. 2: [Addition]・PCM・ADPCM playback library user's manual・2. Specifications
↓p107
Added to file format in " Table 2.1 Library specifications "
----------------------------------------------------
｜File format｜ :                  ｜        :   
｜           ｜SaturnPCM format 3) ｜PCM uncompressed
----------------------------------------------------

■No. 3: [Addition]・PCM/ADPCM playback library user's manual・2. Specifications
↓p107
Added to the file format of " Table 2.1 Library specifications"
Added "Loop playback" to the "Specifications" column of the "Function" section
-------------------------------------
｜Function ｜～, loop playback ｜ :   
-------------------------------------

■No. 4: [Addition]・PCM/ADPCM playback library user's manual・2. Specifications
↓p108
Added to file format in " Table 2.1 Library specifications "
----------------------------------------------------------------------------------------
｜ Buffer reservation ｜ Extended work buffer: 2048 bytes ｜ 8) Only for SaturnPCM format ｜
----------------------------------------------------------------------------------------



■No. 5: [Addition]・PCM/ADPCM playback library user's manual・2. Specifications
↓p108~109
" Table 2.1 Library specifications "
Add references
 1)~
 2)~
 3)SaturnPCM format 
  SaturnPCM format files are created by converting AIFF files using the conversion tool AIF2SAP.
  The characteristics of the SaturnPCM format are as follows.
  ・To transfer data directly from the CD block to the sound memory using SCU-DMA,
   CPU load is reduced.
  ・Since a ring buffer is not required, there is no pressure on the main memory.
  *For details on how to use the SaturnPCM format, please refer to "4. Programming Notes/Section (8)".
 4)~
 5)The loop playback function can only be used in memory playback mode (resident playback method) or file playback mode.
 6)~
 7)~
 8)Extended work buffer is required only when using SaturnPCM format.
   The SaturnPCM format uses an extended work buffer but does not require a ring buffer.
 9)~
 10)~
 11)~

■No. 6: [Addition] - PCM/ADPCM playback library user's manual - 3. Playback procedure
↓p110
Added the following items to the flow of “ Figure 3.1 Playback procedure during stream playback ”
┌──────────────┐
│Sound         │SND_Init
│initialization│
└──────────────┘

┌──────────────┐
│Stream reading│STM_ExecServer
└──────────────┘

■No. 7: [Modification] - PCM/ADPCM playback library user's manual - 3. Playback procedure
↓p110
Modified "(2) Program example"
Incorrect
 <Omitted>
Correct
----------------------
    #define RING_BUF_SIZE (2048L*10)
    #define PCM_ADDR      ((void*)0x25a20000)
    #define PCM_SIZE      (4096L*2)
    
    /* work */
    PcmWork pcm_work;
    
    /* ring buffer */
    Uint32 ring_buf[RING_BUF_SIZE / sizeof(Uint32)];
    StmHn stm;
    PcmHn pcm;
    
    /* Initialize sound */
    SND_Init(･･);
    
    /* Initialization */
    PCM_Init();
    
    /* ADPCM usage declaration (required when using ADPCM) */
    PCM_DeclareUseAdpcm();
    
    /* Interrupt handling settings */
    Set the V blank IN interrupt using INT_???.
    Call PCM_VblIn(); within the V blank IN interrupt.
    
    /* File initialization */
    GFS_Init(･･);
    STM_Init(･･);
    STM_OpenGrp();
    STM_SetExecGrp(･･);
    /* Open stream */
    stm = STM_OpenFid(･･);
    
    /* Generate handle */
    PCM_PARA_WORK(&para) = &pcm_work;
    PCM_PARA_RING_ADDR(&para) = ring_buf;
    PCM_PARA_RING_SIZE(&para) = RING_BUF_SIZE;
    PCM_PARA_PCM_ADDR(&para) = PCM_ADDR;
    PCM_PARA_PCM_SIZE(&para) = PCM_SIZE;
    pcm = PCM_CreateStmHandle(&para, stm);
    
    /* Start playing */
    PCM_Start(pcm);
    while(TRUE) {
                /* Run the server */
                STM_ExecServer();
    
        /* Playback task processing */
        PCM_Task(pcm);
    
        /* End judgment */
        if (PCM_GetPlayStatus(pcm) == PCM_STAT_PLAY_END) break;
    }
    /* Abandoning handle */
    PCM_DestroyStmHandle(pcm);
    
    /* Close stream */
    STM_Close(stm);
    
    /* End processing */
    PCM_Finish();
-----------------------

■No. 8: [Addition] - PCM/ADPCM playback library user's manual - 4. Programming notes
↓p112
Added to " (1) Notes on creating applications "
-----------------
・PCM_Task You can set the upper limit of the amount to be processed in one call using the function
 PCM_Set1TaskSample. This allows the load on the PCM_Task function to be stabilized.
-----------------

■No. 9: [Addition] - PCM/ADPCM playback library user's manual - 4. Programming notes
↓p113
" (8)About SaturnPCM format " added

■No.10: [Added]・PCM/ADPCM playback library user's manual・4. Programming notes
↓p117
Added 2 codes to “ No2.1 Error Code ”
----------------------------------------------------
｜PCM_ERR_TOO_SMALL_PCMBUF｜PCM buffer too small   ｜
｜PCM_ERR_ILL_SIZE_PCMBUF ｜Invalid PCM buffer size｜
----------------------------------------------------


■No.11: [Delete]・PCM/ADPCM playback library user's manual・6. Function specifications
↓p122~
Table and explanatory text "PCM_SetPcmCmdBlockNo" function deleted

■No. 12: [Addition] - PCM/ADPCM playback library user's manual - 6. Function specifications
↓p122-123
Added to " Table 6.1 Function List " Added the following functions
--------------------------------------------------------------------------------
｜SaturnPCM use declaration (file system)     ｜ FS）PCM_DeclareUseSapGfs ｜1.4 ｜
｜SaturnPCM usage declaration (stream system) ｜ SS)PCM_DeclareUseSapStm ｜1.5 ｜
--------------------------------------------------------------------------------
｜Setting the number of loop playbacks        ｜ PCM_SetLoop             ｜3.7 ｜
--------------------------------------------------------------------------------
｜ Setting playback start trigger size        ｜ PCM_SetStartTrgSize     ｜4.10｜
｜ Setting the playback start trigger sample  ｜ PCM_SetStartTrgSample   ｜4.11｜
｜ Setting the playback stop trigger sample   ｜ PCM_SetStopTrgSample    ｜4.12｜
--------------------------------------------------------------------------------
｜Preload file                                ｜ PCM_PreloadFile         ｜6.3 ｜
--------------------------------------------------------------------------------

■No.13: [Addition]・PCM/ADPCM playback library user's manual・6. Function specifications
↓p122-123
Add the following to the notes column of " Table 6.1 Function List "
--------------------------------
 FS)Required for SaturnPCM (file playback) 
 SS)Required for SaturnPCM (stream playback)
--------------------------------

■No.14: [Addition]・PCM/ADPCM playback library user's manual・6. Function specifications
↓p124
added " No1.4 PCM_DeclareUseSapGfs "
added " No1.5 PCM_DeclareUseSapStm "
added " No3.7 PCM_SetLoop "
added " No4.10 PCM_SetStartTrgSize "
added " No4.11 PCM_SetStartTrgSample "
added " No4.12 PCM_SetStopTrgSample "
added " No6.3 PCM_Pre loadFile "

= =======================================================


■No. 1: [Addition]・Virtual CD System User's Manual・2.Setup Edition
↓p11
Added “ 5.3 Sample Data Specifications ”

■No. 2: [Modification]・Virtual CD System User’s Manual・CD Emulation Software Edition
↓p13
Changed the contents of "CD emulation software edition"
Incorrect
 <Omitted>
Correct
-----------------------
This section explains how to use CD emulation software, which is application software that runs on a
PC compatible machine. We will briefly explain the CD emulation system and explain the role of CD
emulation software.

Chapter 2 assumes three types of CD emulation models and explains the CD emulation operating
procedure for each model.

In order to perform CD emulation, it is necessary to specify in advance how the data will be
placed on the CD. (Creating a CD is explained in detail in the "CD Builder User's Manual")

The operating method and display contents of the virtual CD emulator are explained in Chapter 3.
-----------------------


■No. 3: [Modification]・Virtual CD System User's Manual・CD Emulation Software Edition
↓p17
"1.2 General flow of work" Changed the following part

"(2) Creation of materials, programs, etc."
Incorrect
 <Omitted>
Correct
--------------------------
・About the CD-DA file format Data must be arranged in Intel format on a virtual CD PC compatible device.
If the data is in Motorola format, byte swapping must be performed beforehand.
-----------------------------

" (3) CD location information description "
Incorrect
 How to create this script file is from Chapter 3.
Correct
 How to create this script file is explained in the "CD Builder User's Manual".


" (4) Creating a CD configuration information file "
Incorrect
 <Omitted>
Correct
--------------------------
Create a CD configuration information file when performing "direct DOS file access".
The CD configuration information file shows the correspondence between individual MS-DOS files and
CD access positions (minutes, seconds, and frame values). Start the CD builder XBLD.EXE for direct DOS
file access and create a CD configuration information file.
-----------------------------


" (5) Creating a CD image file "
Incorrect
 <Omitted>
Correct
--------------------------
Create a CD image file when performing "real-time emulation".
Start CD builder XBLD.EXE for real-time emulation and create a CD image file.
-----------------------------


" (7) Correction work "
Incorrect
 <Omitted>
Correct
-----------------------------
As a result of emulation, we will modify the materials, programs, etc. - If necessary, we will use the
respective creation tools to make the modifications. In the case of "Direct DOS file access", perform
step (4) again (if the file size after modification is the same, there is no need to perform step (4)).
For "Real-time emulation", repeat step (5).
-----------------------------


" (8) CD image partial update "
Incorrect
 <Omitted>
Correct
--------------------------
Use VCDUTL.EXE to partially update the CD image.
There are two modes for partially updating a CD image: one is to directly rewrite the CD image file, and
the other is to perform real-time emulation using the CD image update information.
-----------------------------


■No. 4: [Modification]・Virtual CD System User's Manual・Chapter 2 CD Emulation Operation Procedure
↓p19
Corrected the description of the following items
------------------------------------
●“Direct DOS file access”
A collection of data files before becoming a CD image and a CD configuration information file are required.
This CD configuration information file is generated using the CD builder XBLD from a script file. This is explained in Section 2.1.

●“Real-time emulation”
Prepare a file that contains the CD image as is.
This CD image file is generated using the CD builder XBLD from a script file. This is explained in Section 2.2.

●“CD image partial update”
A CD image file, MS-DOS file of the modified part, and update information file are required.
Create an update information file using the CD image partial update tool VCDUTL.
The parameters when running emulation are also different. This is explained in Section 2.3.
----------------------------

■No. 5: [Modification]・Virtual CD System User's Manual・Chapter 2 CD Emulation Operation Procedure
↓p19
In “Figure-3. Operation procedure overview”
----------------------
Incorrect
　VCDBUILD.EXE
Correct
　XBLD.EXE
----------------------
Also, the figure/table number has been changed from "Figure-4" to "Figure-3".