[A89] Clarification
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[A89] Clarification
to clear a few things up :)
1. KerNO (of which I'm the author) does not support
kernel based programs, and never will. So, I prefer to call it a "kernel like"
program or more simply stated: The Kernel that
Never Was, Never Will Be, and Always Shall Be. If you are looking for a good
kernel to run kernel based programs, i recommend PreOS, or UniversalOS. KerNO is
designed to work with NOSTUB programs only.
2. AMS 2.08 was recalled because of problems with
linking and the black cable AFAIK. Hopefully, TI will be re-releasing it soon :)
I have 89, 92p, and v200 copies from the first time they released
it.
3. The clock feature on AMS 2.08 is run from Auto
Interrupt 3, and is extremely accurate on HW2 calcs (based off a RTC crystal).
HW1 calcs do not have this, and the AI3 frequency fluctuates around
0.616322/second versus 1/second on my TI-89 HW1. ie, in a 60 second time frame,
my hw1 calc will trigger ai3 ~87 times.
IF an older asm game is run that uses
OSSetSR(0x700) to disable interrupts for row reading during game play, the clock
will loose time. In this case, the clock will loose time because AI3 was not
allowed to execute its 3 or so lines of ASM and update the system clock by
adding one second to the time. So don't be surprised if you run an older game,
and it makes the clock loose time.
In my mind, the best way to _rowread now, is to
disable the necessary auto interrupts (1 and 5) by redirecting them to a
dummy handler (rte) rather than using ossetsr.
4. Large ASM games on 2.08 are not broken. If you
are having problems with PPG compressed programs, it is because of a bug in the
launcher, NOT because of new limitations. Solution: get the latest version of
ttstart, and your programs will run.
5. AMS 2.08 is very nice for the TI-92p/V200 HW2
calcs otherwise, don't bother. (I own a 89 hw1, 92p hw2, and a v200)
Additionally, i believe that ams 2.08 takes an extra 64k of flash on the ti-89
(not on the 92p/v200) due to sector boundaries.
References: