Difference between revisions of "Terminology"
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== C == | |||
'''Communications Register Unit''': serial interface embedded in TMS processors | |||
'''CRU''': short for Communications Register Unit | |||
== D == | == D == | ||
'''Device Service Routine''': Program that is provided for accessing a peripheral device; would be called a ''driver'' in common terminology. The DSR defines device names and functions to operate the device on a higher level, abstracting from the hardware details. There are utility functions in the BASIC ROM and for assembly language programs to facilitate accessing the DSR of a device given by name (''DSRLNK''). The DSR is usually stored in a ROM circuit that was included on the PCB of the expansion card. Each card may be selected by a ''CRU'' operation which leads to the DSR being mapped into the CPU address space. The common region for DSRs is >4000 to >5fff. On the Geneve, DSRs are also included as parts of the MDOS operating system, replacing the fixed DSRs on the ROMs. | |||
'''DSR''': see ''Device Service Routine'' | '''DSR''': see ''Device Service Routine'' | ||
== F == | |||
'''Firehose cable''': Nickname for the ''Flex Cable Interface'' | |||
'''Flex Cable Interface''': Card, cable, and plug that connect the TI-99/4(A) console with the ''Peripheral Expansion Box''. The Flex Cable Interface's card was usually plugged into slot 1 of the P-Box. | |||
== I == | |||
'''ISR''': see ''Interrupt Service Routine'' | |||
== P == | |||
'''P-Box''': short for ''Peripheral Expansion System Box'' or ''Peripheral Expansion Box'' | |||
Revision as of 13:34, 9 February 2011
C
Communications Register Unit: serial interface embedded in TMS processors
CRU: short for Communications Register Unit
D
Device Service Routine: Program that is provided for accessing a peripheral device; would be called a driver in common terminology. The DSR defines device names and functions to operate the device on a higher level, abstracting from the hardware details. There are utility functions in the BASIC ROM and for assembly language programs to facilitate accessing the DSR of a device given by name (DSRLNK). The DSR is usually stored in a ROM circuit that was included on the PCB of the expansion card. Each card may be selected by a CRU operation which leads to the DSR being mapped into the CPU address space. The common region for DSRs is >4000 to >5fff. On the Geneve, DSRs are also included as parts of the MDOS operating system, replacing the fixed DSRs on the ROMs.
DSR: see Device Service Routine
F
Firehose cable: Nickname for the Flex Cable Interface
Flex Cable Interface: Card, cable, and plug that connect the TI-99/4(A) console with the Peripheral Expansion Box. The Flex Cable Interface's card was usually plugged into slot 1 of the P-Box.
I
ISR: see Interrupt Service Routine
P
P-Box: short for Peripheral Expansion System Box or Peripheral Expansion Box