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VDP Speed
Score: 106.01 %,
Type: Forum topic , Comments: 5 comments
Hi,
Does anyone has some data on the speed of the V9938 macro commands (bytes/µsec ...
It cannot be used if you want to time precisely the V9938 commands, because of the interrupt handler.
So, I have to ask the question again :
Does anyone has some data on the speed of the V9938 commands ...
VDP Specific MSX2+ Registers
Score: 135.21 %,
Type: wiki , Comments: 0 comments
MAG
(MSX1/2/2+/Turbo R)
4/16K selects VRAM configuration. Write 1 if the VDP is not a V9938 nor ... with a digitizer. (V9938 & V9958 only)
IE2 enables (1) or disables (0) the light Pen interrupts. (Used only ... the horizontal retrace interrupts indicated by the register 19 . (V9938 & V9958 only)
M3-5 are bits ...
VDP Sat Rotation & blitter
Score: 131.93 %,
Type: Forum topic , Comments: 8 comments
haven't studied the v9938) but I think that time ago I've read about using both vdp commands and cpu ...
vdp registers
Score: 104.48 %,
Type: Forum topic , Comments: 13 comments
– b#0 (EV) (external VDP input)
What is it used for? (this bit is not documented in V9938 ... is it used for? (this bit is not documented in V9938 programmers guide)
This is only used on the MSXs ...
VDP rd/wr timing
Score: 142.6 %,
Type: Forum topic , Comments: 15 comments
been replaced by fast static memory
It is a v9938 VDP.
this vdp It is a v9938 VDP. ...
VDP programming MSX1
Score: 91.93 %,
Type: Forum topic , Comments: 44 comments
1st.
This undocumented mode is not available in the V9938 as far as I know.
Ok, thanks all ...
VDP Mode Registers
Score: 141.7 %,
Type: wiki , Comments: 0 comments
MAG
(MSX1/2/2+/Turbo R)
4/16K selects VRAM configuration. Write 1 if the VDP is not a V9938 nor ... (V9938 & V9958 only)
IE2 enables (1) or disables (0) the light Pen interrupts. (Used only by Korean ... the horizontal retrace interrupts indicated by the register 19 . (V9938 & V9958 only)
M3-5 are bits ...
VDP indirect register access
Score: 154.88 %,
Type: Forum topic , Comments: 0 comments
Learned something today about the V9938/58 indirect register access which I never gave a thought before
I am playing with an FPGA VGA text mode adapter which mirrors the MSX text screen (screen 0 and 1) by snooping on VDP IO access.
As the BIOS of MSX2 and up uses the VDP indirect register access ...
VDP illegal modes
Score: 448.1 %,
Type: Forum topic , Comments: 42 comments
that you're doing the tests PingPong. I don't think you'll find the same behavior on the V9938 ... that you're doing the tests PingPong. I don't think you'll find the same behavior on the V9938 ... to know for sure.
I already know what you think about v9938 bits meaning, but i hope for msx2 modes ...
VDP early clock bit?
Score: 592.22 %,
Type: Forum topic , Comments: 23 comments
the V9938 tech manual specifies the s True enough. You know, the V9938 tech manual specifies the sprite ... agree?
yes!
yes!
[quote]True enough. You know, the V9938 tech manual specifie True enough. You know, the V9938 tech manual specifies the sprite layer as being a 'layer' on top ...
