Space Invaders clone | MSX Resource Center (Pagina 7/9)

Van thegeps

Paragon (1189)

16-01-2021, 23:04

Cool! Now I'm really interested on take a look in that SN guide!

Van TaylorsEverythingChannel

Champion (415)

16-01-2021, 23:05

Good for you, Geppo. :-)

Van TaylorsEverythingChannel

Champion (415)

16-01-2021, 23:12

I also converted Farty Pig to the SMS with the same method. You're welcome. :-D

Van thegeps

Paragon (1189)

16-01-2021, 23:56

Cool!

Van thegeps

Paragon (1189)

17-01-2021, 00:10

Can't find farty pig on tfh. Don't you have uploaded it yet? Tbeybarevready to use or it is needed to load cbios before and then them?

Van TaylorsEverythingChannel

Champion (415)

17-01-2021, 00:14

Well I never sent it yet to him.

Van thegeps

Paragon (1189)

17-01-2021, 00:44

TaylorsEverythingChannel wrote:

Hey Geppy? I just did another MSX to SMS hack of your game, changing those A0 and A1 ports to the 93 output direct. It has the audio converted to the SN76489. [/url]

I don't understand: do you mean that to have audio conversion is enough to replace ports A0h and A1h to 93h? I can't find relations to these ports on SN76489 guide you posted here...
Some explanations will be very appreciated

Van TaylorsEverythingChannel

Champion (415)

17-01-2021, 00:58

.data:00000000 d3 a0 out (0xa0),a
.data:00000002 78 ld a,b
.data:00000003 d3 a1 out (0xa1),a
.data:00000005 00 nop
.data:00000006 d3 a0 out (0xa0),a
.data:00000008 7c ld a,h
.data:00000009 d3 a1 out (0xa1),a
.data:0000000b 00 nop
.data:0000000c d3 a0 out (0xa0),a
.data:0000000e 7d ld a,l
.data:0000000f d3 a1 out (0xa1),a
.data:00000011 00 nop
.data:00000012 cd 93 00 call 0x0093

As you see, I changed these audio ports to CALL 0x0093 at the end.

Van thegeps

Paragon (1189)

17-01-2021, 01:19

What is it, there at 93h? It is a specific call im sms bios? So it won't work on sg-1000

Van TaylorsEverythingChannel

Champion (415)

17-01-2021, 01:43

Download the SMS file from TaylorsGames on TFH and see the whole source.