Author
| HBI-V1 programing information needed...
|
NYYRIKKI
msx master
Posts: 1503 |  Posted: January 19 2005, 08:21 |
Quote:
| digitize to ram -- if i can properly figure out how direct i/o works, should be faster then to vram, so maybe nicer to record some animation when clipping the portion to be captured ... and maybe very nice for hd users, even if it isnt like with an movie box on the peecee ... dont you think ??
|
If you have MegaSCSI, you can record EVA movies on HBI-V1 (That is how the original EVA movies was done) |
|
[D-Tail]
msx guru
Posts: 2994 | Posted: January 19 2005, 20:19 |
Yeah, only the toolset seems to be lost somewhere... Or it's on Japanese sites. Doesn't bother me anyhow, cause I don't have a MEGA-SCSI 
EVA movies can also be converted from AVI-movies tho, using AVI2EVA.  |
|
mfrissen
msx novice
Posts: 19 | Posted: January 22 2005, 23:34 |
I cant use that software too, no MegaSCSI, just an Sunrise IDE with an hd +cd in a nice (C= 1541) housing together with an at PSU and a little cooler...but works realy great !
So, its should be fun if i can make a little program that canmake some sort of recording.
First of al , the speed doesn't have to be 30 fps, imposible on an msx, lets say 1 is reaseneble ...
|
|
dvik
msx master
Posts: 1303 | Posted: January 22 2006, 11:06 |
Some more info:
Write to #7FFC bit 0-1 (command):
00 = Terminate
01 = (Instant?) Digitize
02 = Digitize with delay
03 = ??
Write to #7FFF:
Delay for write command 2 (in frames)
|
|
HansO
msx addict
Posts: 375 | Posted: January 22 2006, 18:28 |
Tomas Karlson (BlueMSX developer lately) send me the HBI-V1 service manual.
That gives some insight how the capturing is done:
1. First the composite video signal is split into RGB (with a standard television IC) and sync (the wellknown LM1881).
2. The three RGB signals are send to three a/d converters (6 bit).
3. The digital data is then stored in a 64 K DRAM memory after being converted to YJK.
The whole logic of capture, convert and store in DRAM and the interface with the MSX is performed by a Sony IC labeled MSM79v023. It is a standard IC it seems, many references on sites offering ICs for sale. But no datasheet alas.
The program is stored in a standard 27256 ROM.
The datasheet is on the MSX Whats New page of the MSX Info Pages.
|
|
HansO
msx addict
Posts: 375 | Posted: January 23 2006, 15:08 |
The datasheet of two of the ICs in the HBI-V1 are added now:
- The MSM79v023 Oki Gate array
- video decoder Sony V7201
Thanks to Tomas again!
|
|
BiFi
msx guru
Posts: 3142 | Posted: January 23 2006, 15:22 |
I noticed you're doing some redesigning... It's looks quite nice like that.
|
|
HansO
msx addict
Posts: 375 | Posted: January 23 2006, 20:39 |
Thanks. Still working on it.
|
|
|
|
|
