Re: The Soundblaster DSP project

Posted on 2023-10-05, 16:25

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

maxtherabbit wrote on 2023-10-05, 16:24: Maelgrum wrote on 2023-10-05, 16:24: maxtherabbit wrote on 2023-10-05, 16:23: No error this time it just freezes after passing the loopback check Wait a liitle )) I gave it like 45 seconds how long are you thinking? Ok, its long enough.

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 16:24

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

maxtherabbit wrote on 2023-10-05, 16:23: No error this time it just freezes after passing the loopback check Wait a liitle ))

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 16:19

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sb16dump V0.16 experimental support for 4.12 I hope it works ))

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 15:08

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sb16dump V0.15 experimental support for 4.12 (found error in previous version)

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 14:59

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

some more sbcrack scan Stage4 scans full possible range

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 14:44

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sb16dump V0.14 experimental support for 4.12

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 14:34

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

S95Sedan wrote on 2023-10-05, 14:30: Maelgrum wrote on 2023-10-05, 14:27: sbcrack stage 4 for 4.12 Stage 4, addr 120F ...Success![/code] Excellent ! Stage 5 not required - all checks are integrated in stage 4 sb16dump will be ready soon

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 14:27

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sbcrack stage 4 for 4.12

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 14:18

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Stack structure for variant 44: C0 ACC BF R0 BE DPH BD DPL BC ACC BB PCH BA PCL looks good for attack ))

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 14:04

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sbcrack stage 3 for 4.12

---

Re: The Soundblaster DSP project

Posted on 2023-10-05, 13:13

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sbcrack stage 2 for 4.12

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 18:09

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

8903 is the chip i believe? the chip is different on almost every card, as it's no longer separate (discrete) 8052 MCU. so, for example, on my CT4180 card the chip is CT2511 (v416-6k_986e5cb9), on CT3670 it's CT8903 (v416-6k_986e5cb9) and on CT4520 it's CT8920 (v416-8k_b15514ef). This 8k dumps is …

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 17:31

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This should be all the known firmware versions for now. you're missing one - the 8K version of V4.16 dumped from "CT4520" CRC32: B15514EF - it's different than any other V4.16 dumped so far (from CT4180, CT3670 and CT4390). This 8k dumps is standard 6k integrated with upper 2k mirrored from lower …

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 16:40

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cant get it to work on a ct3900, hangs on csp detection booting up, maybe it possibly needs the last 2kb? No, last 2k is never used. But 4.16 looks more compact - maybe ASP/CSP commands are cutted ? this needs to be researched. Main question is - has 4.16 any benefits ? IMHO, This DOTT audio sounds …

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 16:29

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

(discrete) V4.16 looks like it has some valid data in 0x1800-0x1FFF area, but it is has not. Data in 0x18XX is the same as in 0x19XX and so on. it is just copy of valid ROM from lower region - some address decoding artefact. So it is 6k ROM.

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 16:11

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My deepest thanks to all participants ! I couldn't do any of this without your support.

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 16:02

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Seems i am too tired ))

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 16:01

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sb16dump V0.13. Support dumping from V4.16

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 15:42

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sb16dump V0.12. Support dumping from V4.16

---

Re: The Soundblaster DSP project

Posted on 2023-10-04, 15:27

by

by Maelgrum

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

S95Sedan wrote on 2023-10-04, 15:21: Works on the ct1740. Diagnoses like usual. DMA clicking is something else, still present unfortunately. Sad (( But it was epic quest ! ))

---