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DIrect TMS9928 - GBS8200 YPbPr connection
Score: 99.62 %,
Type: Forum topic , Comments: 42 comments
banks of 4164 64Kx1 connected to the poor V9938 (16 chips in total). I have the motherboard, ... connected to the poor V9938 (16 chips in total). I have the motherboard, but actually use 4x 4464 instead ...
Direct Video Memory Access (DVMA) for V9938
Score: 1352.54 %,
Type: Forum topic , Comments: 52 comments
not work well simply because V9938 full memory cycle length is 279 ns and it may be impossible to insert ... desiderable.
In this way, the v9938 or TMS9918, have access to vram, but they only serves barely as a display ... the original.
Just one question aside :
In the V9938 databook we can se Just one question ...
Disappointed about msxdev
Score: 440.24 %,
Type: Forum topic , Comments: 128 comments
in a lot of other computers, while the V9938 was quite MSX specific and very typically (almost) uniquely ...
I do not agree. You miss a lot of things that the v9938 have and the TMS not.
more sprites ...
I do not agree. You miss a lot of things that the v9938 have and the TMS not.
more sprites ...
Discrepancy between OpenMSX and real hardware (color palette change)
Score: 115.2 %,
Type: Forum topic , Comments: 24 comments
understand he was trying to write into the V9938 palete registers on a VG8020 computer with TMS9929 VDP. It ... code , so he can also support the palette on those Yamaha MSX1 computers with V9938 (like the CX5MII). ...
Displaying sprites in screen 5
Score: 104.12 %,
Type: Forum topic , Comments: 7 comments
I've tried different addresses (the V9938 Technical Data Book and the MSX2 Machinetaal Handboek both ... are referring to 0x7A00.
The #7A00 is from both the The #7A00 is from both the V9938 Technical Data ...
Dissecting the MSX Turbo-R exclusive chips
Score: 453.98 %,
Type: Forum topic , Comments: 8 comments
v9938 I would add also v9938
Take a carefully look on the Take a carefully look on the list ... and of course the S1985 and V9938.
Other broken boards containing the following chips will also be welcome: ...
DIY 2MB and 4MB memory mapper
Score: 139.34 %,
Type: News post , Comments: 18 comments
are compatible with TTL levels.
The same is true for V9938/58, 82C55, and possibly all MSX engines. They ...
Do you always use di/ei for VDP access ?
Score: 123.6 %,
Type: Forum topic , Comments: 9 comments
Hi everyone,
Do you use di/ei for every case of VDP access ?
It seems to me it can be avoided when it's a port where ISR will not access.
For example, loading the palette colors on the V9938:
ld hl,palette
ld bc,16*2:9Ah
xor a
di
out (99h),a
ld a,128+16
out (99h),a
otir ...
DO you need a graphic card for msx?
Score: 77.54 %,
Type: Forum topic , Comments: 97 comments
is a great vdp compared to v9938/58.
It has a blit command engine, and you can program your own rotation ...
Do-It-Yourself MSX
Score: 86.36 %,
Type: Forum topic , Comments: 91 comments
is having V9938 by default). The complete ROM image is available in RTC and non-RTC versions.
Now ... of a v9938?
maybe can you provide the ability to host both vdp's? (exclusive) with a simple switch ... state - respect )
FWIW: I would have included V9938/V9958 in base part, because lots of stuff ...
