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TR E - Tape Read--Perkin Elmer format--8 bit output

(12/18/89)

PURPOSE

Copies a file from tape to disk. Disk file will have only eight bits per pixel. Currently the only operation which can utilize this file is "TV L*". The OPEN3, REDLIN8, and WRTLIN8 routines will work with this file.

USAGE

.OPERATION: TR E

.TAPE DEVICE NAME: MUA0
[Enter the name of the drive the tape is mounted on. This question is entirely installation-dependent; for the Albany 6210, the drive is 'MUA0:'.]

.TAPE FILE NUMBER: 1
[Enter the number of the file on tape which is to be copied onto disk.]

.SPECIFY OPTIONS: (S)TAND OR (W)INDOW
[Enter 'S' to read the entire file, or 'W' to window out a portion thereof. Since only eight bits are available there is no "T" transmission option.]

1. 'S'--Standard. SPIDER will ask:

.DISK FILE: PIC001
[Enter the file on disk where the file on tape is to be copied.]

.TAPE FILE NUMBER: 0
[If no more pictures are to be copied, enter a '0'; otherwise, proceed with the next file number.]

[The first file on tape is then copied into PIC001.]

2. 'W'--Window. SPIDER will now ask:

.DISK FILE: PIC001
[Enter the file on the disk where the window is to be kept.]

.DISK FILE DIMENSIONS: 42,32
[Enter the size of the window.]

.UPPER LEFT COOS: 64,64
[Enter the upper left coordinates of the window.]

.TAPE FILE NUMBER: 0
[If no more files are to be copied, enter a '0'.]

[A window of size 42x32 of the first file on tape is kept in PIC001. The upper left coordinates of the window are at position 64,64 of the original picture.]

NOTES

  1. If the tape contains valuable data, make sure the write ring is removed.

  2. In the batch mode, SPIDER will not return to the tape file number, but will solicit the next operation.

  3. The tape position is internally kept in register X100 ( = PARAM(99) ). In repeated accesses to either 'TR' or 'TW', the tape will not be rewound, but starts from the current position.

  4. Mount tape as "Foreign": $ MOU/FOR MTA0 \ For the VAX --or-- $ MOU/FOR MTA1 / 11/780 $ MOU/FOR MSA0 For the 11/750

SUBROUTINES

TAPE8

CALLER

TAPE1

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