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- Directory: MAIN
-
-
- Ad Lib, May 1989
- ----------------
-
- Sound driver (SOUND.COM) upgraded to V1.51.
-
- Ad Lib, January 1989
- --------------------
-
- This diskette now contains version 1.5 of the sound driver. This
- version uses a different method of calculating delays (required between
- writes to the chip) so that the W option (see Dec-87 below) on fast
- machines will no longer be necessary.
-
- The instrument file format, as shown in Appendix C of the Programmer's
- Manual, has changed and is explained in the file BKFORMAT.TXT.
-
- In the event that two different boards use the same port address, it is
- useful to be able to change the port address of one of the boards. As
- explained in the Programmer's Manual, the port address of the Ad Lib card
- is at 0x388. However, there exists the possibililty of using three other
- addresses: 0x218, 0x288 or 0x318. The port address is currently hard-wired,
- but in future production runs we will be adding a jumper to the card to
- facilitate the changing of port addresses. (To date, conflicts have been
- very rare.) If you are developing software which does not use our sound
- driver, we suggest that you allow for the use of different port addresses
- as we have done in our driver (see next paragraph).
-
- Our sound driver (SOUND.COM) can accomodate the different port addresses.
- This is done when loading the driver by giving the argument "p" followed
- by the address to be used. For example:
- > sound p288
- This will cause the sound driver to use0x288 as the port address.
-
-
- Ad Lib November 1988
- --------------------
-
- New Version 1.3:
-
- - Support of two new functions:
-
- function 22: Use to set the pitch bend range (in half-tones).
- Argument 1: pitch range, from 1 to 12.
- Function 0 sets this value to 1 half-tone for
- compatiblity with software that was designed
- for the older sound-driver.
-
- function 23: Use to enable/disable the wave-form parameter.
- Argument 1: state, 0 == off, 1 == on.
- Note that the function 0 disables the wave-form
- parameter, so to enable it, function 23 must be
- called AFTER function 0.
-
-
-
- If the wave-form is enabled (func. 23), then function 16 (Set timbre)
- expects two more integers at the end of the timbre definition array
- (field 26 & 27), which specify values for the wave-form parameters
- of operators 0 and 1.
-
-
-
- Here is the description of the status register, read from i/o
- address 0x388:
-
- bit # function
- ------+---------
- d7: IRQ flag, set if flag T1 or T2 is on
- d6: T1 flag, set if timer 1 has elapsed. Remains set until it is
- reset by setting bit d7 in the register at address 4
- d5: T2 flag, same as d6 for timer 2
- d4-d0: not used.
-
- (This information is missing from the Programmer's Manual. Note
- however, that the interrupts are not wired, so that the timers are
- of no use given the delivered configuration of the card. You can
- wire this interrupt yourself if you wish, but this will void your
- warranty.)
-
-
-
- Ad Lib April 1988
- -----------------
-
- Errors where detected in the Programmer's Manual, here is the
- list:
- page 26, 27 and 28:
- Functions 7, 11 and 13 that are given in your manual are
- not supported (they are not implemented).
-
- page 40:
- The delay times after a read or write are in micro (10E-06)
- seconds.
-
- page 40:
- Register 04 start/stop T1 and T2 should be exchanged
- ( T1=D0, T2=D1 ).
-
- page 43:
- When NOTE-SEL = 0, FNUM(MSb) are Xs (dont cares).
-
-
-
- Ad Lib December 1987
- --------------------
-
- This disk contains a new sound driver (sound.com version 1.2)
- update for fast computers with 286 or 386 microprocessors. This
- new sound driver solves the note-skipping-problem.
-
- All you need to do is replace your old sound driver with the
- new one. If you still have problems you can change the wait
- parameter as indicated below:
-
- sound Wxx
-
- where 'xx' is the delay value in hexadecimal. The value ranges
- from 0 to 10 for normal systems.
-
-
-
- Ad Lib November 20th 1987
- -------------------------
-
- In regards to the .ROL file formats, certain fields must be set
- to specific values:
-
- -field #1 and #2 should be set to 0 and 4 respectively.
-
- -field #9 should read 0 => percussive, and 1 => melodic.
-
- -field #10 should be set to zero.
-
-
-