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-
- M i x e r !
-
- V e r s i o n 3 . 3 0
-
-
- by Shawn Gresham
-
-
- Introducing the new FLEXIBLE Mixer!! The stationary memory
- buffer for Sabre Chat! Versions 3.00+ now has the capability
- to be sized and tuned by you for your system's specific needs.
- Originally, there were two versions of Mixer! supplied with
- Sabre Chat!. They were DUET!.COM for just two nodes and
- MIXER!.COM for up to eight concurrent nodes. MXR! version
- 3.30, however, allows YOU to specify the exact number of nodes
- you wish it to support. Also, you have the option of setting
- the size of the character buffer that MXR! uses to hold
- temporary data. This, in turn, allows YOU to control the
- amount of memory that Mixer! will occupy in your system.
-
- The MXR! command line works like this:
-
- MXR! <maximum node to support> <buffer size>
-
- The maximum node to support should be set to the
- highest node number of your system. (DEFAULT is 50)
-
- The buffer size can be tuned to your specific needs
- based on the number of nodes that will be accessing
- it at once. (DEFAULT is 50)
-
-
- For a two node system I would suggest using:
-
- MXR! 2 20
-
- This should safely cover any data transfer necessary. If
- missing characters becomes frequent, then remove it from
- memory (see later) and re-install it with a larger buffer size
- (the second number) until the problem disappears.
-
- Since, typically, Sabre Chat! users will only be typing one at
- a time, a buffer size of 20 ought to be fine up to 50 nodes.
- Surpassing 50 nodes is fruitless because Sabre Chat! at this
- time does not support node 51 or above.
-
- Memory Allocation:
-
- 0x000 - 0x0ff (256 bytes) Program Segment Prefix (PSP)
- 0x100 - 0x1b4 (181 bytes) Actual Mixer! Code
- 0x1b5 + (variable) Pointers and Memory Buffer
-
- Size (in paragraphs):
-
- You can figure the exact memory space taken by Mixer!
- using the following formula.
-
- (437 + nodes * 2 + buffer_size * 2) div 16 + 1
-
- A paragraph is a block of 16 bytes. To get the size in
- bytes, merely multiply the paragraph size by 16.
-
- Difficulties:
-
- If you are having problems with missing characters,
- please try increasing the buffer size by ten or so.
-
- If you are having problems with it sending anything
- at all, and it gets garbage when you first enter
- Sabre Chat!, make sure you have the node option (the
- first number) set to the highest node number in your
- system!
-
- Remove!:
-
- Also, Mixer! 3.30 comes with another utility named
- REMOVE!.COM that will remove any MXR!.COM version
- 3.00 and greater from memory. Simply type REMOVE!
- at the dos prompt and it should remove the last
- MXR! installed in the system. You will need to
- remove MXR! if you wish to change the buffer size
- or node number.
-
- Thanks,
-
- S h a w n G r e s h a m
-
- Author of Sabre Chat! and MXR!
-
-