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SYS68K/CPU-40/41 USER'S MANUAL
FORCE COMPUTERS
1-2
As mentioned above the application accesses devices on an EAGLE module via a logical connection,
rather than directly. Therefore, each device accessible through the Application Command Interface is
identified by a unique logical device number which is provided by the interface.
A base board providing the Application Command Interface deposits the NUL terminated string "ACI"
beginning at offset $0 of the board's main memory accessible from the VMEbus; and the VMEbus address
of the first Command Control Buffer (CCB 0), provided by the Application Command Interface, is loaded
into the long word at offset $4. Thus, the application intending to communicate with devices through the
Application Command Interface, or to get generic information about available devices, has to look for the
"ACI" identifier within the VMEbus' standard (A24) and extended (A32) address range.
Any application has to verify whether the base board the application is running on provides the Application
Command Interface, too.
If the application has found a board providing the interface, it has to use the first Command Control Buffer,
addressed by the content of the long word at offset $4 of the board's memory, either to issue the SERVICE
command to get information about the available devices or other information about the EAGLE modules;
or to issue the OPEN command to establish a logical connection between the application and a specific
device.
However, before the application uses the first Command Control Buffer to issue a command through the
Application Command Interface it has to gain the ownership of the first Command Control Buffer.
The detailed structure of a Command Control Buffer is described in the subsection "The Command Control
Buffers".
The Command Control Buffer contains some semaphores to be used to control the access to the buffer,
and to indicate various states of the Command Control Buffer. To gain the ownership of the Command
Control Buffer a semaphore has to be set to indicate that the buffer is already in use by an application. Due
to this fact, the application has to verify the state of this semaphore, and if the semaphore is cleared, that
means the Command Control Buffer is available, the application has to set it to prevent the Command
Control Buffer from being acquired by another application.
When the application has the ownership of the first Command Control Buffer, it has to prepare the buffer
to issue the particular command. The application can only issue the OPEN command or the SERVICE
command, to get generic information, through the Application Command Interface. All other commands
(CLOSE, READ, and WRITE) are refused by the Application Command Interface because no logical
connection between the application and a device exists.
Содержание SYS68K/CPU-40
Страница 2: ...INTRODUCTION...
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Страница 8: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 1 2 Figure 1 1 Photo of the CPU Board...
Страница 9: ...SECTION 1 INTRODUCTION 1 3 Figure 1 2 Block Diagram of the CPU Board...
Страница 33: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 2 20 Figure 2 1 Location Diagram for All Jumperfields...
Страница 34: ...SECTION 1 INTRODUCTION 2 21 Figure 2 2 The Front Panel of the CPU Board...
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Страница 42: ...INSTALLATION...
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Страница 57: ...HARDWARE USER S MANUAL...
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Страница 70: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 2 4 Figure 2 2 Location Diagram of Jumperfields B17...
Страница 83: ...SECTION 3 HARDWARE USER S MANUAL 3 13 Figure 3 2 Location Diagram of the System EPROM Area...
Страница 92: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 3 22 3 5 6 Location Diagram of Jumperfield B16...
Страница 95: ...SECTION 3 HARDWARE USER S MANUAL 3 25 Figure 3 5 Location Diagram of the Backup Supply Jumperfield B1 and B20...
Страница 98: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 3 28 Figure 3 6 Location Diagram of the Boot EPROM...
Страница 104: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 3 34 Figure 3 7 Location Diagram of the 0S S Resistors R563 to R569...
Страница 107: ...SECTION 3 HARDWARE USER S MANUAL 3 37 Figure 3 11 Location Diagram of RS232 Configuration Jumperfields B3 B4 B5 and B6...
Страница 110: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 3 40 Figure 3 12 Location Diagram of the 0S S Resistors R563 to R569...
Страница 133: ...SECTION 3 HARDWARE USER S MANUAL 3 63 Figure 3 24 CPU Board Front Panel and Rotary Switch Positions...
Страница 141: ...SECTION 3 HARDWARE USER S MANUAL 3 71 Figure 3 25 Location Diagram of Header B12...
Страница 152: ...SECTION 3 HARDWARE USER S MANUAL 4 3 Figure 4 1 Front Panel of the CPU Board...
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Страница 172: ...SECTION 3 HARDWARE USER S MANUAL 6 17 Figure 6 2 Location Diagram of Jumperfield B19...
Страница 179: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 6 24 Figure 6 4 Location Diagram of B13...
Страница 181: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 6 26 Figure 6 6 Location Diagram of Jumperfield B13...
Страница 183: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 6 28 Figure 6 8 Location Diagram of Jumperfield B2...
Страница 185: ...SYS68K CPU 40 41 USER S MANUAL FORCE COMPUTERS 6 30 Figure 6 9 Location Diagram of Jumperfield B13...
Страница 187: ...APPENDIX TO THE HARDWARE USER S MANUAL...
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Страница 205: ...SECTION 4 APPENDIX TO THE HARDWARE USER S MANUAL E 1 APPENDIX E CIRCUIT SCHEMATICS OF CPU BOARD...
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Страница 207: ...SECTION 4 APPENDIX TO THE HARDWARE USER S MANUAL E 3 E 1 Circuit Schematics of DRM 01...
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Страница 209: ...SECTION 4 APPENDIX TO THE HARDWARE USER S MANUAL E 5 E 2 Circuit Schematics of SRM 01...
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Страница 213: ...SECTION 4 APPENDIX TO THE HARDWARE USER S MANUAL F 3 Location Diagram for All Jumperfields...
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Страница 228: ...COPIES OF DATA SHEETS...
Страница 229: ...COPIES OF DATA SHEETS RTC 72423 DUSCC 68562 PI T 68230...
Страница 230: ...USERS NOTES...
Страница 231: ...USERS NOTES...
Страница 232: ...USERS NOTES...
Страница 233: ...OPTIONS APPLICATIONS MODIFICATIONS...
Страница 234: ...INTRODUCTION TO VMEPROM IN USE WITH THE SYS68K CPU 40 41...
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Страница 268: ...APPENDIX TO THE INTRODUCTION TO VMEPROM...
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Страница 319: ...THE APPLICATION COMMAND INTERFACE PROGRAMMING GUIDE...
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