Basic hat | MSX Resource Center (Pagina 4/4)

Van gdx

Enlighted (6215)

05-03-2015, 13:01

(For all the tests, I added the variable behind each NEXT.)

Van Josb

Master (206)

05-03-2015, 20:44

mars2000you wrote:

It can be found in the TOSEC package, in the firmware section.

Thanks, I think I found it

Van Josb

Master (206)

05-03-2015, 21:00

ARTRAG wrote:

Josb wrote:

anyway, it is an interesting post. Even more if we could compare our basics to others

Here we could try to find some nice comparison with the TI99/4A
http://atariage.com/forums/topic/215138-bitmap-mode/page-6

yes, I saw it but after reading some posts I'm surprised about the huge difference among emulators what it takes me to think that Basic is a good mean to show how well an emulator is.

Van Grauw

Ascended (10768)

05-03-2015, 21:13

I imagine it would make a big difference if you’d use an original cartridge, or loaded it into RAM (xbasic1.bin / xbasic2.bin). The latter would be much faster.

Van Manuel

Ascended (19468)

05-03-2015, 23:12

BiFi's test was with Basic-kun loaded in RAM. So, we should test the same scenario on the emulators to see if it also gets to 22s.

OK, done, openMSX gives 23.13 seconds
And exactly the same program as I used on the real machine gives me 22.92 seconds! So, pretty good But just a bit too slow (99.09% of actual speed).

Result in openMSX on R800 (enabled by booting without floppy) without using MSX-BASIC'n: 940.43 seconds.
On my real GT: 929.62 seconds.

So, here openMSX's R800 is also a bit too slow (98.85% of actual speed).

Van Manuel

Ascended (19468)

05-03-2015, 22:36

Poltergeist wrote:

@manual: Isn't that a bit strange. I would say that if you set throttle to 1000%, is should be 10 times faster compared to the original speed. How is that dependant on the settings of the emulator (I can imagine speed of the PC, but wouldn't any normal PC be doing this with ease)?

Because in many cases it won't get to 1000%, but it depends on how many frames may be skipped and which video rendering options are used. On a REALLY fast PC you *will* get it and it could be timed in real time.

Hmm, I just tested it on openMSX with SDLGL-PP, all kinds of effects, max_frameskip 0 and speed 1000 and indeed, it just gets to 1000% Perhaps emulation is nowadays faster than I thought It also means it is worth to use full-throttle (no throttling at all) to get a result as quick as possible.

Van gdx

Enlighted (6215)

05-03-2015, 23:39

Manuel wrote:

BiFi's test was with Basic-kun loaded in RAM. So, we should test the same scenario on the emulators to see if it also gets to 22s.

This is surely the reason and BiFi used probably the DRAM mode.
I used Basic-Kun on a Flash ROM. I think the default mode is R800 ROM.

Manuel wrote:

And exactly the same program as I used on the real machine gives me 22.92 seconds! So, pretty good But just a bit too slow (99.09% of actual speed).

In what mode?

Van Manuel

Ascended (19468)

06-03-2015, 09:38

All my tests were in R800 DRAM mode.

Van ARTRAG

Enlighted (6935)

06-03-2015, 23:17

This version fits in screen 2 (and screen 5)

100 SX=100:SY=56:SZ=64:CX=240:CY=192
110 DIM RR(256)
120 FOR I=0 TO CX:RR(I)=CY:NEXT I
130 COLOR 15,1,1:SCREEN 2
140 CX=CX*0.5:CY=CY*0.46875:FX=SX/64:FZ=SZ/64
150 XF=4.71238905/SX
160 FOR ZI=64 TO -64 STEP -1
170   ZT=ZI*FX:ZS=ZT*ZT
180   XL=INT(SQR(SX*SX-ZS)+0.5)
190   ZX=ZI*FZ+CX:ZY=CY+ZI*FZ
200   FOR XI=0 TO XL
210     XT=SQR(XI*XI+ZS)*XF
220     YY=(SIN(XT)+SIN(XT*3)*0.4)*SY
230     X1=XI+ZX:Y1=ZY-YY
240     IF RR(X1)>Y1 THEN RR(X1)=Y1:PSET(X1,Y1),15
250     X1=ZX-XI
260     IF RR(X1)>Y1 THEN RR(X1)=Y1: PSET(X1,Y1),15
270   NEXT XI:NEXT ZI
280 GOTO 280