Okay, so Runer was speculating about how to get the best speed out of a math routine, so the first challenge he gave was for 8x8 multiplication with a 16-bit output. I am not doing all that well with the challenge, but here is a variation of what I came up with that actually is a 8x16 multiplication (it requires 4 more cycles to make it 8x8).
A_Times_DE:
;Input:
;     A,DE
;Outputs:
;     A is 0
;     BC is not changed
;     DE is not changed
;     HL is the result
;     z flag is set
;     c flag is set if the input A is not 0
;Notes:
;           If A is 0, 29 cycles
;Speed: 145+6n+21b cycles
;           n=floor(log(a)/log(2))
;           b is the number of bits in the number
;           Testing over all values of A from 1 to 255:
;           313.7058824 average cycles
;           Worst: 355
;           Best  : 166 (non trivial)
;Size: 25 bytes
     ld hl,0           ;10
     or a \ ret z     ;9
     cpl \ scf        ;8
     adc a,a         ;4
     jp nc,$+7       ;10         ;45
Loop:
     add a,a          ;4
     jp c,$-1         ;10         ;14(7-n)

     add hl,de        ;11         ;11         (the rest are counted below)
     add a,a          ;4           ;4b
     ret z              ;5|11      ;5b+6
     add hl,hl         ;11         ;11b-11
     jp p,$-4         ;21|20     ;20n+b
     jp $-7
So that code is about twice as large as the following more standard routine, but it is also on average about 52 cycles faster and the worst case scenario is 35 cycles better than the worst case for the next routine. The advantage with the following code is that the speed is not all over the place:
DE_Times_A:
;Inputs:
;     DE and A are factors
;Outputs:
;     A is not changed
;     B is 0
;     C is not changed
;     DE is not changed
;     HL is the product
;Speed:
;     342+6x, x is the number of bits in A
;     Average: 366 cycles
;Size:
;     13 bytes
     ld b,8            ;7              7
     ld hl,0           ;10             10
       add hl,hl      ;11*8         88
       rlca            ;4*8           32
       jr nc,$+3     ;(12|18)*8  96+6x
         add hl,de   ;--             --
       djnz $-5      ;13*7+8      99
     ret               ;10             10

Another interesting note is that the first routine does not use a counter and so it preserves BC. For the best speed without an LUT, I still think unrolled routines are the best

Actually, another note-- the first routine doesn't really get a speed boost from unrolling

You can make a hybrid of the two codes that will cost the b register, but it will be 21 bytes and average a smidge over 320 cycles, too.

EDIT: Also, I posted here because the topic title had a nice name and I am not ready to submit it elsewhere without the scrutiny of the better asm coders, first

Can you add appvar support as well?

What do you mean by that? As in executing appvars from a group as BASIC or assembly programs or recalling them as pictures? Or do you mean extracting appvars?

At the "n" is where you will find it.

Also, I think we read minds, yeong I was working on an extractor (but written in assembly code). It was just going to let people run BASIC programs/ Assembly programs from groups and recall pictures.

I will say that I have had these kinds of problems before and I got frustrated and added a call 000Bh as the delay and that didn't work I have mentioned this before, but I was told it was a delay issue. Also, I was writing $FF to the port before each write, as well. I wonder if there is a hardware issue in some models? Mine was an 84+SE without the extra RAM and a 84+BE without the extra RAM. Here is what I could do:

Press left and the plus key. Then press Enter and the down key is registered.

It was always things like that, but I could just have coded something wrong or misunderstood the documentation. I will check again later comparing WabbitEmu to my actual calc and whatnot.

Actually, I noticed that at first I made lots of games when I started TI-BASIC and I made a name for myself in my school because of the RPGs. However, by the end of highschool, I kind of stopped making games and I cannot seem to get back into the mood .__. I mean, mini games that take a minute of thought and 20 minutes of programming are fine, but a full fledged RPG just seems impossible. I wonder if it is the same for other post-highschool members? And if so, I wonder if that could cause them to be less active?

Thanks annoyingcalc and cool, yeong! I have since started adding in items. There is a little ball thing in the first screenie that is now a Heal Potion when you pick it up I have made room for 120 items, 16 special items, and 64 "events" in the save file, so far. "Events" are just things like the gate unlocking, items being picked up, and things like that.I think I will need to add a lot more, but they are marked as flags, so they each take a bit. This means by adding a byte to the save file can add 8 event flags. If I increase the size by 24 bytes, I will have a total of 256 event flags available.

EDIT: Now I have a menu item working that I think looks nice

Hey, it was in the running for POTY2011... it might be over, now, but it was an accomplishment Though I should change something in that signature >.>

Wow, this is great! And we can do better this year I wonder if I should write a series of programs and announce the release dates-- for one week, every day, a release of a full fledged game or program!