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1.4 Built-in Commands CP/M Operating System Manual 1.4.4 SAVE Command Syntax: SAVE n ufn The SAVE command places n pages (256-byte blocks) onto disk from the TPA and names this file ufn. In the CP/M distribution system, the TPA starts at 100H (hexadecimal) which is the second page of memory. The SAVE command must specify 2 pages of memory if the user's program occupies the area from 100H through 2FFH. The machine code file can be subsequently loaded and executed. The following are examples of the SAVE command: SAVE 3 X.COM Copies 100H through 3FFH to X.COM. SAVE 40 Q Copies 100H through 28FFH to Q. Note that 28 is the page count in 28FFH, and that 28H = 2 * 16 + 8 = 40 decimal. SAVE 4 X.Y Copies 100H through 4FFH to X.Y. The SAVE command can also specify a disk drive in the ufn portion of the command, as shown in the following example: SAVE 10 B:ZOT.COM Copies 10 pages, 100H through 0AFFH, to the file ZOT.COM on drive B. 1.4.5 TYPE Command Syntax: TYPE ufn The TYPE command displays the content of the ASCII source file ufn on the currently logged disk at the console device. The following are valid TYPE commands: TYPE X.Y TYPE X.PLM TYPE XXX 1-11
1.4 Built-in Commands CP/M Operating System Manual The TYPE command expands tabs, CTRL-I characters, assuming tab positions are set at every eighth column. The ufn can also reference a drive name. TYPE B:X.PRNThe file X.PRN from drive B is displayed. 1.4.6 USER Command Syntax: USER n The USER command allows maintenance of separate files in the same directory. In the syntax line, n is an Integer value in the range 0 to 15. On cold start, the operator is automatically logged into user area number 0, which is compatible with standard CP/M 1 directories. You can issue the USER command at any time to move to another logical area within the same directory. Drives that are logged-in while addressing one user number are automatically active when the operator moves to another. A user number is simply a prefix that accesses particular directory entries on the active disks. The active user number is maintained until changed by a subsequent USER command, or until a cold start when user 0 is again assumed. 1.5 Line Editing and Output Control The CCP allows certain line-editing functions while typing command lines. The CTRL-key sequences are obtained by pressing the control and letter keys simultaneously. Further, CCP command lines are generally up to 255 characters in length; they are not acted upon until the carriage return key is pressed. Table 1-1. Line-editing Control Characters Character Meaning CTRL-C Reboots CP/M system when pressed at start of line. CTRL-E Physical end of line; carriage is returned, but line is not sent until the carriage return key is pressed. CTRL-H Backspaces one character position. 1-12
Page 1 and 2: The CP/M Editor CP/M Features and F
Page 3 and 4: 1 CP/M Features and Facilities Tabl
Page 5 and 6: 4 CP/M Dynamic Debugging Tool Table
Page 7 and 8: Table of Contents (continued) 3-7 D
Page 9 and 10: CP/M also supports ED, a powerful c
Page 11 and 12: 1.1 Introduction CP/M Operating Sys
Page 13 and 14: 1.2 Functional Description CP/M Ope
Page 15 and 16: 1.3 Switching Disks CP/M Operating
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Page 21 and 22: 1.5 Line Editing and Output Control
Page 23 and 24: 1.6 Transient Commands CP/M Operati
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Page 55 and 56: 1.8 Operation of CP/M on the MDS CP
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2.1 Introduction to ED CP/M Operati
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2.1 Introduction to ED CP/M Operati
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2.2 ED Error Conditions CP/M Operat
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2.3 Control Characters and Commands
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2.3 Control Characters and Commands
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3.1 Introduction CP/M Operating Sys
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3.2 Program Format CP/M Operating S
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3.3 Forming the Operand CP/M Operat
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3.4 Assembler Directives CP/M Opera
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3.5 Operation Codes CP/M Operating
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3.7 A Sample Session CP/M Operating
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Following the sign-on message, DDT
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4.2 DDT Commands CP/M Operating Sys
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4.4 A Sample Program CP/M Operating
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5.2 Call Conventions CP/M Operating
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5.3 A Sample Copy Program CP/M Oper
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5.3 A Sample Copy Program CP/M Oper
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5.4 A Sample File Dump Utility CP/M
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5.5 A Sample Random Access Program
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5.5 System Function Summary CP/M Op
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6.2 First-level Regeneration CP/M O
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6.2 First-level Regeneration CP/M O
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6.3 Second-level Regeneration CP/M
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6.3 Second-level Regeneration CP/M
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6.4 Sample GETSYS and PUTSYS CP/M O
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6.5 Disk Organization CP/M Operatin
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6.6 BIOS Entry Points CP/M Operatin
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6.7 A Sample BIOS CP/M Operating Sy
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6.9 Reserved Locations in Page Zero
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6.10 Disk Parameter Tables CP/M Ope
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6.11 The DISKDEF Macro Library CP/M
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Appendix A : The MDS-800 BIOS CP/M
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Appendix B : A Sekletal CBIOS CP/M
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Appendix C : A Skeletal GETSYS/PUTS
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Appendix D : MDS-800 Cold Start Loa
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Appendix D : MDS-800 Cold Start Loa
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Appendix E : A Skeletal Cold Start
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Appendix F : CP/M Disk Definition L
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Appendix G : Blocking and Deblockin
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Appendix H : Glossary CP/M Operatin
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Appendix I : CP/M Error Messages CP
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Index CP/M Operating System Manual
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Index CP/M Operating System Manual
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