Search found 67 matches

by cybdyn
December 26th, 2014, 2:47 am
Forum: Research
Topic: How to dump your CDROM BIOS (Firmware)
Replies: 132
Views: 153444

Re: How to dump your CDROM BIOS (Firmware)

i did see ps2 mother boards , cdvd-drive has most coomon things in theory of working of cd-dvd drives. like DSP-fifo ic, mcu or "mecha con" based on sony's mcu , not hc05. and servo part. to interface w/ main cpu (IOP) cdvd-dsp uses more lines : 16bit bus, more addr lines, and real dma i/f (DMACK/DR...
by cybdyn
December 23rd, 2014, 9:10 pm
Forum: Miscellaneous / Off Topic
Topic: 32kHz to 44 or 48kHz
Replies: 5
Views: 7126

Re: 32kHz to 44 or 48kHz

in psio we convert 18,9/37.8khz to 44.1 , as ps1 used last one.., by software. also, some kind formula i saw from no$cash psx specs pages
by cybdyn
June 3rd, 2014, 10:23 pm
Forum: Research
Topic: How to dump your CDROM BIOS (Firmware)
Replies: 132
Views: 153444

Re: How to dump your CDROM BIOS (Firmware)

no$cash , soory if i do pressure to you, the RESEARCH that you are making is incredible, i can only dream of it .... just sad if it will disappear in "secret" folders)))) PSIO can acts like AR. but to make it close to original can take much work. but basic things like - boot with custom menu or code...
by cybdyn
June 2nd, 2014, 6:48 pm
Forum: Research
Topic: How to dump your CDROM BIOS (Firmware)
Replies: 132
Views: 153444

Re: How to dump your CDROM BIOS (Firmware)

btw, i found funny string in your last ver 1.9 "CD ROM HC05 BIOS" - "Nocash High-level Clone".
by cybdyn
June 2nd, 2014, 5:58 pm
Forum: Research
Topic: How to dump your CDROM BIOS (Firmware)
Replies: 132
Views: 153444

Re: How to dump your CDROM BIOS (Firmware)

no$cash: it's interesting, you always used ASM for you ps1 emulator? as i thought first your "HLL" of cd dirver is what you may use for pc emu))) anyway, under macro definition or HLL , i mean - make some kind information more close to how sub-cpu works. because when we can read pdf's of cxd1199 (cx...
by cybdyn
May 30th, 2014, 7:39 am
Forum: Research
Topic: How to dump your CDROM BIOS (Firmware)
Replies: 132
Views: 153444

Re: How to dump your CDROM BIOS (Firmware)

oh, no$cash, it's super interesting to see how you research what inside of sub-cpu of cd-rom. in result you leave tons of information on your page. but it's hard to gather all pieces in one ))) especially asm code of motorolla. is any chance if you make in result some kind if macro or high level int...
by cybdyn
March 18th, 2014, 6:06 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

to NO$CASH: "accordingly, the PSX can use only three of the available eight SRAM slots: One for currently pending INT1, one for undelivered INT1, and one for currently/incompletly received sector)." so sub-cpu holds space in RAM for only 3 sectors? then if no reading from Host (ps1) it overwrites da...
by cybdyn
February 17th, 2014, 6:06 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

can you tell more about question above: where you find many new things about "cd/help" "cd/emu"?
by cybdyn
February 16th, 2014, 7:05 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

question about this info: INT10h Command Start (when INT10h requested via 1F801803h.Index0.Bit5) ..The upper bits however can be ORed with the lower bits (ie. Command Start INT10h and 1st Response INT3 would give INT13h). i didnt know about it - are you really saw such INT = 0x13 ? what game use suc...
by cybdyn
February 16th, 2014, 6:56 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

Hi, no$cash i see you can know many interesting/useful information, like: cd/help: added notes on sub-cpu mainloop/response/priority/timing/queue/flags cd/emu: simplified 1st/2nd/3rd response slots (instead overcomplicated queue) debug: optional IRQx logging to tty window (plus detailed cdrom INTxx ...
by cybdyn
February 8th, 2014, 6:03 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

also i've heard you did disassembled code from sub-cpu. hope you will add more interesting info...?))
by cybdyn
February 8th, 2014, 5:47 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

actually , i have questions not only about buffer size))
i find many interesting things - your emulator (no$psx) can do, but i didnt find expalnations on cd-rom info page.
also i have questions about info from your pages too.
by cybdyn
January 5th, 2014, 9:40 am
Forum: Hardware
Topic: PSX cdrom sector buffer capacity
Replies: 10
Views: 10091

Re: PSX cdrom sector buffer capacity

Hi No$cash, any chance talk w/ you, i sent email to you. i still have couple questions about cdrom emulation
by cybdyn
December 22nd, 2013, 6:08 am
Forum: Hardware
Topic: [Hardware Mod] 8MB in (PU-18) Retail PSX
Replies: 55
Views: 64675

Re: [Hardware Mod] 8MB in (PU-18) Retail PSX

this thing is something unbelievable for me, but if you understand what to do - you get real result. I'm impressed!
by cybdyn
December 22nd, 2013, 6:04 am
Forum: Work Logs / Projects
Topic: CD-decoder ROM dumped
Replies: 9
Views: 11588

Re: CD-decoder ROM dumped

it's very interesting, as we can better understand how code works on sub-cpu.
by cybdyn
February 25th, 2013, 9:05 pm
Forum: Hardware
Topic: PSOne Screen Issues
Replies: 4
Views: 5390

Re: PSOne Screen Issues

i faced with such problems and it was caused of bad cxd2106.
by cybdyn
February 2nd, 2013, 6:46 am
Forum: General Chat / Messaging
Topic: Biggest PlayStation Fan Discovers Awesome Sauce
Replies: 18
Views: 22560

Re: Biggest PlayStation Fan Discovers Awesome Sauce

any instruction of how it works or what is for, i mean - for example this web browse try connect to some server, that was made exceptionally for this software, but it can be not exist for nowadays.
or what plan if we get some hardware ?)))
by cybdyn
February 2nd, 2013, 4:08 am
Forum: General Chat / Messaging
Topic: Biggest PlayStation Fan Discovers Awesome Sauce
Replies: 18
Views: 22560

Re: Biggest PlayStation Fan Discovers Awesome Sauce

theoretycally we can make device like modem, or even get modem from DC and use it))) dreamcast modem has simple interface and can be accessed by ps1 PIO port. maybe more useful if we make BroadBand adaptor or Ethernet adaptor, so from hardware side it looks not so complex - but what about software??...
by cybdyn
February 1st, 2013, 8:51 pm
Forum: Hardware
Topic: DATEL PlayStation 1 Floppy Disk Drive
Replies: 8
Views: 12075

Re: DATEL PlayStation 1 Floppy Disk Drive

if we add memcard emulator to psio - it 'll be same but for SD card)))
by cybdyn
January 24th, 2013, 7:40 pm
Forum: Work Logs / Projects
Topic: PSX RS-232 Serial I/O for SIOCONS / HIT-SERIAL
Replies: 31
Views: 40764

Re: PSX RS-232 Serial I/O for SIOCONS / HIT-SERIAL

Is it possible to use this device in combination with PC software to play "Link Cable Compatible" games over Internet? difficult to say, technically possible, but depends on delay between some kind of "packets" that sio used in protocol. if create something faster ETHERNET adaptor for example or so...