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About msx processor speed (fudeba look at this, please)

by PingPong on 31-12-2008, 17:37
Score: 108.55 %, Type: Forum topic , Comments: 4 comments
0001Ch EXPTBL EQU 0FCC1h RG0SAV EQU 0F3DFh RG1SAV EQU 0F3E0h RG2SAV EQU 0F3E1h RG3SAV EQU 0F3E2h RG4SAV EQU 0F3E3h RG5SAV EQU 0F3E4h RG6SAV EQU 0F3E5h RG7SAV EQU 0F3E6h ; Detect High Speed VDP ; Routine by Daniel Caetano - Amusement Factory ; ; Returns A=1 if high speed VDP ; Returns A=0 if slow VDP ; Uses ...

about cbios

by PingPong on 30-12-2008, 05:15
Score: 108.47 %, Type: Forum topic , Comments: 16 comments
on an original BIOS all routines are made from 0 The main goal of C-BIOS is to be compatible with the old ... it in a regular MSX without doing any hardware mods. Just load the BIOS in page 0 and the software in the following pages and there you go. Well, I guess it is not that easy if you do interslot calls to page 0 ...

VDP programmer guide

by PingPong on 16-12-2008, 09:54
Score: 108.38 %, Type: Forum topic , Comments: 10 comments
http://www.atariage.com/forums/index.php?showtopic=130508 at this link there is a reference to a texas instrument vdp programmer guide, by texas itself. It's a newer document compared to the usual tms vdp datasheet, because: 1) do a mention of the mixed undocumented mode. 2) ...

vdp Mixed mode programming

by PingPong on 13-12-2008, 11:57
Score: 108.48 %, Type: Forum topic , Comments: 39 comments
0: defined as a circle, color table say: red on blue Frame 1: defined as a filled circle, color ... Allocate two PNTs, PNT0 at 1800h and PNT1 at 3800h Use the first 128 tiles in PNT0 (say set0) and the second 128 in PNT1 (say set1) Display PNT0, in the meanwhile update set1 and PNT1 when done, (it ...

What happen if:

by PingPong on 17-11-2008, 23:51
Score: 108.3 %, Type: Forum topic , Comments: 11 comments
the msx vdp require two bytes to set the vram ptr. What happen if, the vramptr = 0x1000 and one does out (0x99),80 out (0x98),byte to write Does the next byte be written on 0x1080 ? ... and vramptr must be 4081 and NOT 1040 now, if the out x98,0 really resets the "set cursor " ...

link not working....

by PingPong on 09-11-2008, 13:52
Score: 108.26 %, Type: Forum topic , Comments: 1 comment
http://www.*.nl/*/* {mod: no linking to warezheavens eh, whether the bandwidth is down or not} Bandwidth limit exceeded again :) Bandwidth limit exceeded again (General discussion) ...

does this work?

by PingPong on 03-11-2008, 21:02
Score: 108.38 %, Type: Forum topic , Comments: 7 comments
on emus doing ld c,0x99 in f,(c) jp m,someaddr does 'fill' the cpu flags with the vdp status reg? this is faster than in a,(0x99) and 128 jp nz, someaddr You'll ... that is bit 0. So teoretically a jr c, some address after the in f,(c) should work. But you said me ...

www.karoshi.... again down?

by PingPong on 29-10-2008, 20:24
Score: 108.34 %, Type: Forum topic , Comments: 4 comments
.. Nope,...or at least it works fine for me...:-? Nope,...or at least it works fine for me... working here PingPong, still having trouble :-? working here PingPong, still having trouble Oops, it's really down right now ...

Basic interface

by PingPong on 11-10-2008, 22:32
Score: 108.27 %, Type: Forum topic , Comments: 3 comments
I'm looking for a place where to find info about msxbasic interface with assembly: - How does work the ability to add commands? _somecommand. - How does work the parameter passing? - can be a kinda of "command overloading" ...

Have the VDP limits been surpassed?

by PingPong on 30-09-2008, 18:17
Score: 108.26 %, Type: Forum topic , Comments: 5 comments
2.0, which will start after CERN has opened up that worm hole. Just watch this space and wait ...
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