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- CLOCK - For Amstrad PCW and Spectrum +3 J. Elliott, 20 May 1993.
- ================================================================================
- CLOCK is a program to increase the usefulness of the PCW's built-in clock.
- People who will find this useful are those who use the SCA mk2 interface (with
- the battery clock) and those who datestamp files. A Spectrum +3 version called
- P3CLOCK is also included.
- +3 users should use P3CLOCK.COM rather than CLOCK.COM, and IP3CLOCK.BAS rather
- than ICLOCK.BAS.
-
- When CLOCK is running, the time is shown in the bottom left-hand corner of
- the screen, on the status line. If the status line is turned off, the clock
- will also disappear.
-
- Before using CLOCK, type BASIC ICLOCK to install the clock program. THE
- PROGRAM MUST BE INSTALLED BEFORE USE! It is also wise to reinstall it if you
- change your PCW or the version of CP/M you are using (eg 9512 users may upgrade
- from v2.1 to v2.2 so they can use an external printer without the daisywheel
- attached). Spectrum +3 users may wish to reinstall the clock to change the
- colour it is displayed in.
-
- When CLOCK has been installed, the current system time will be shown and
- updated. If the computer is busy (eg using the disc drive) the internal clock
- will keep time but the clock onscreen will stop until the computer has finished
- (whereupon the screen clock will catch up).
-
- Type CLOCKDEL to remove the CLOCK extension from memory.
-
- You must not load CLOCK when GET or SUBMIT are active. This means that you can
- use CLOCK in PROFILE.SUB *ONLY*, repeat, *ONLY*, if it is the last command.
- Similarly, CLOCKDEL must not be run from within a SUB file. Otherwise, the two
- programs will interact in an unpleasant way; memory will be made inaccessible;
- the clock will not be updated properly and the computer may well crash.
- There is a solution: run CLOCK and CLOCKDEL from the program SUPERSUB.COM
- in PROGS.ARK, rather than SUBMIT.COM. SUPERSUB has fewer features than SUBMIT,
- but since it is less complicated it doesn't cause problems with CLOCK.
-
- Spectrum +3 users: There is a warning on p280 of the manual that the clock is
- not very accurate. My own experiments suggest that the clock takes 1⌐ minutes
- of real time to advance by 1 minute. This experiment was conducted with the
- computer showing the A> prompt.
- ________________________________________________________________________________
-