Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 300)

III. COMMAND REFERENCES - 15. Command References 15A. Driver488/DRV Commands
Personal488 User’s Manual, Rev. 3.0 III-285
Once an interrupt is ARM ed, it remains ARM ed until it is DISARM ed, or until Driver488 is reset. BASIC
automatically suppresses light pen interrupt detection during the execution of an interrupt service
routine, so the interrupt service routine is never re-entrantly invoked. In languages that explicitly poll
the light pen status, polling should not be done during the interrupt service routine.
AUTO REMOTE
SYNTAX AUTO REMOTE [{ON|OFF}]
RESPONSE None
MODE SC
BUS STATES None
SEE ALSO LOCAL, REMOTE, ENTER, OUTPUT
EXAMPLE PRINT#1,"AUTO REMOTE ON"
The AUTO REMOTE command enables or disables the automatic assertion of the Remote Enable ( REN )
line by OUTPUT . When AUTO REMOTE is enabled, OUTPUT automatically asserts REN before
transferring any data. When AUTO REMOTE is disabled, there is no change to the REN line.
AUTO REMOTE is on by default.
BUFFERED
SYNTAX BUFFERED
RESPONSE Integer from 0 to 1,048,575 (or 2 20 -1)
MODE Any
BUS STATES None
SEE ALSO ENTER, OUTPUT
EXAMPLE PRINT#1,"ENTER16#1024 BUFFER &H1000:0 EOI"
PRINT#1,"BUFFERED"
INPUT#2,N
PRINT N,"bytes were actually received."
The BUFFERED command returns the number of characters transferred by the latest ENTER , OUTPUT ,
SEND DATA , or SEND EOI command. If a CONTINUE transfer is in progress, then the result is the
number of characters that have been transferred at the moment the command is issued. This command
is most often used after an
ENTER #count BUFFER term to determine if the full number of characters
was received, or if the transfer terminated upon detection of TERM . It is also used to find out how many
characters have currently been sent during an asynchronous DMA transfer.
BUS ADDRESS
SYNTAX BUS ADDRESS [name] prim-addr[sec-addr]
name is the name of an external device. If name is not specified, then BUS
ADDRESS sets the bus address of the interface.
primary is the IEEE 488 bus primary address of the specified device.
secondary is the IEEE 488 bus secondary address of the specified device.
RESPONSE None
MODE Any
BUS STATE None
SEE ALSO MakeDevice
EXAMPLE PRINT#1, “BUS ADDRESS DMM 1400"
The BUS ADDRESS command sets the IEEE 488 bus address of the IEEE 488 hardware interface or an
external device. Every IEEE 488 bus device has an address that must be unique within any single
IEEE 488 bus system. The default IEEE 488 bus address for Driver488 is
21 , but this may be changed
if it conflicts with some other device.