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BlueMSX direct VDP registers access
Score: 110.75 %,
Type: Forum topic , Comments: 10 comments
that status register 0 is selected for reading so if you leave VDP #15 pointing to status register 2 then the bios will "crash" as you've describe yourself when debugging it.
Because register 0 ... 0
3) you need to set to 0 S2 after having finished and before re-enabling the interrupts ...
Smooth horizontal scroll on MSX2 using r#23
Score: 110.8 %,
Type: Forum topic , Comments: 13 comments
a scanline interrupt (by setting r#19 and r#0)
- or simply set the r#19 and check on r#0 until the scanline ... of interrupts. The interrupt handler is managed by a RST 038h, which in turns calls the 0FD9Ah hook in the system ... in r#0, and only check on r#0 until the scan interrupt flag (F) is set in s#0. Anyone can confirm this ? ...
Reading the control registers of the VDP
Score: 110.92 %,
Type: Forum topic , Comments: 6 comments
#F3DF - #F3E6: registers 0-7
#FFE7 - #FFF6: registers 8-23
#FFFA - #FFFC: registers 25-27
Thanks ...
Interrupts help needed
Score: 110.95 %,
Type: Forum topic , Comments: 8 comments
karoshi forum for this http://karoshi.msxgamesbox.com/index.php?topic=212.0 )
the interrupt code ... PopulateKeyMatrix
ld a,(keys+8) ;space
bit 0,a ;Check whether space is pressed
ret z ...
MSX-Music BIOS info
Score: 110.9 %,
Type: Forum topic , Comments: 32 comments
Koustracker
- Studio FM
- Super Music Editor 3.0
Based solely on the efficiency of the driver/player, ...
RST $38 T-states
Score: 110.89 %,
Type: Forum topic , Comments: 10 comments
9100h ;tab vectors im 2
;========================================
.phase 9000h-7
db 0feh ;flag binare ...
test2: jr start
;----------------------------------------
;&H9002
res_1: dw 0 ;result without RST 38
;&H9004
res_2: dw 0 ;result with RST 38
;----------------------------------------
; set INT mode 2
start: ...
SCC Waveform table
Score: 111.07 %,
Type: Forum topic , Comments: 8 comments
psg simply setting the freq = 0 and the envelope to triangle wave form for a specific channel. ...
asMSX strange compiling log
Score: 111.1 %,
Type: Forum topic , Comments: 4 comments
Hi everyone,
I am using asMSX 0.12g and each time I am compiling the source, I have a strange line in the log.
See line with "Interrupt.asm" in the picture. Is it an error message or a bug ?
(I tried to reach Eduardo Robsy but the e-mail given in the user's manual did not work) ...
Konami SCC Megarom header
Score: 111.05 %,
Type: Forum topic , Comments: 18 comments
Hi,
What is the correct Konami SCC megarom header ?
I am writing a game with asMSX 0 ... subpages so far (0 to 4) so the ROM file is 40Kb
. The problem arises when I want to select subpage #4 ... registers are 0-1-2-3 for the 4 memory banks).
[quote]I have defined 5 subpages so far (0 to 4) so ...
FDISK310 does not work
Score: 111.07 %,
Type: Forum topic , Comments: 13 comments
I have received my Sunrise CF interface and I tried to make the partitions on a 128Mb CF card, but it does not work. Here is the situation :
- A 128 Mb CF card is inserted in the left slot
- The Sunrise floppy disk is inserted in the FDD
- The ...
