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DuaneAL

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Posts posted by DuaneAL

  4. Posted

    On 1/17/2021 at 1:16 PM, Ksarul said:

    Back then, TI built most equipment to MIL SPEC. One of the tests it had to survive was a drop test. . .rumor back then was 3 feet (1 meter), but the test documentation I've seen said one foot.

    I work for the Navy.  We still test stuff to a one meter drop.  It is supposed to simulate a drop off the edge of a table.  Most of the stuff I test is dropped in five orientations and I usually just drop the same unit five times.  It has to be safe to handle and use.  We do a 10 meter packaged drop in which the item has to be safe to dispose of.

    • Like 2

  5. Posted

    I had a similar issue with mine.  The FG works with original and V2.2 roms on original boards but not QI system boards iirc.  One of my beige units came up as 1981 but somehow had a QI board and wouldn't work.  The LED issue and the reset does sound like a bad board though.

  10. Posted

    7 hours ago, Tursi said:

    .. I think you guys are chasing the wrong problem.. I don't think the Playground asm was written to be assembled by the TI Editor/Assember... @senior_falcon?

     

    @DuaneAL - the final resulting program runs from TI BASIC, but in order to /create/ the program, you need to write assembly. :)

     

    I think you nailed my point🙂! The OP was trying to run demo which should have been runnable without the cartridge.    You and Senior falcon then explain that to develop the programs, one needs to write assembly.  Thanks for saying it much better than I!  And senior falcon’s clarification should help the OP when/if he wants to develop in playground.

  13. Posted

    Is the scratchpad limited to 256?  I seem to recall that it could be expanded but I don't know if there would be a benefit to doing that.  Although, if you had a larger scratchpad, that might make Playground more interesting.

    23 hours ago, Reciprocating Bill said:

    I get very similar results given those conditions with assembly versions of the sieve. Illustrates the invaluable contribution of the scratch pad to performance on the stock design. 

     

  14. Posted · Edited by DuaneAL

    I have been looking forward to this game for quite a while.  I would consider the purchase of    the material as an investment in encouraging people to do this lind of massive development.  Plus, it looks fantastic.  Put me down for one. I know you won't be making a lot of money, if any, from this,  but a few dollars can go to show our appreciation of your efforts 

  16. Posted

    6 hours ago, senior_falcon said:

    Actually the speed gain is quite noticeable if you are running an assembly program. Spad 13 Mk 2 is an example where the extra speed is much appreciated. it is much more responsive.

    Extended BASIC is another story. A stopwatch will show a slight speed increase of around 1 percent.

    What I did involves 2 ram chips piggybacked on the console rom chips and then 2 or 4 piggybacked logic chips with wires connecting all this. I have a switch to select between fast memory or slow memory. There are plans out there for this modification.

    What I don't know is whether this is compatible with some of the new hardware that contains 32K on the 8 bit bus. Does the computer ignore the peripheral's 32K or do they conflict?

    Does the speed increase show up with a compiled basic program?

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