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SECTION 8
APPENDIX TO THE INTRODUCTION TO VMEPROM
I-5
I.2 Accessing the RAM Port from VMEPROM
VMEPROM is equipped with a UART driver to exchange data via the RAM port and to alter the
operating mode of the RAM port. This RAM port UART driver is constructed like all other standard
VMEPROM (PDOS) UART drivers and thus provides the same functions.
In contrast to the standard UART drivers the 'port' flags related to the RAM port UART driver affect it in
a different way. As shown in figure 9, the 'port' flags consist of eight bits and the RAM port UART driver
considers only the C--flag and the I--flag; all other flags are ignored by the driver. The C--flag is
interpreted by the kernel rather than by the RAM port driver. And the kernel determines upon the state
of this flag how to treat control characters, like CTRL-C, ESC, etc.,received via the RAM port. To modify
the 'port' flags the VMEPROM command bp has to be used and the state of the certain flags are
specified as an argument in the argument list of the command. In the following list each flag and its
effect on the RAM port UART driver is described in detail:
S: The
control flow by software flag specifies whether the data flow via the 'serial' data communication
line has to be managed by the XON/XOFF protocol. If this flag is set then the XON and XOFF
characters are used to control data flow via the serial data communication line; otherwise the
XON/XOFF protocol is not used.
C:
The
ignore control character flag either leads the appropriate routine of the VMEPROM kernel
dealing with the character input to interprete received control characters, or to pass the control
characters through the kernel without any processing. If the flag is set then all received control
characters are passed to the application directly; otherwise the kernel interprets the control
characters CTRL-C, CTRL-X, ESC.
D:
The
control flow by hardware flag specifies whether the data flow via the 'serial' data
communication line has to be managed by the specific hardware handshake signals. If this flag is
set then the DTR signal is used to control data flow via the serial data communication line;
otherwise no hardware handshake protocol is used.
8: The
size of character flag denotes the number of bits used to represent a character to be received or
transmitted via the serial data communication line. If the flag is set then the character's size is eight
bits; otherwise seven bits are used to represent a character.
I: The
not interrupt driven input flag controls whether the receipt of a character is indicated by a
hardware interrupt. If this flag is set then the receipt of a character is not indicated by an interrupt;
otherwise a hardware interrupt is generated to indicate the receipt of a character.
P: The
even parity enable flag indicates to generate an even parity bit for each character to be
transmitted via the serial data communication line and to check the even parity of each character
received via the serial data communication line. If this flag is set then the even parity generation and
verification is done for each received and transmitted character; otherwise the parity generation and
verification is disabled.
Содержание SYS68K/CPU-40
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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 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 319: ...THE APPLICATION COMMAND INTERFACE PROGRAMMING GUIDE...
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