Difference between the DTL-H1001 and the DTL-H1101

Discussion in 'Sony Programming and Development' started by RAPTOR115X, Dec 3, 2017.

  1. RAPTOR115X

    RAPTOR115X Spirited Member

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    So basically, apart from the 12V PSU is there any real difference between these units that anyone is aware of as they both use Rev B silicon and appear the same internally. This can also be applied to DTL-H1002 VS DTL-H1102 for example, not just NTSC-U.
     
  2. PixelButts

    PixelButts Site Soldier

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    Disc support may vary by region/model
    I know 100X models support all regions of discs, but to my knowledge a 110X would only support whatever region the X designates. I might be wrong but that's my understanding.

    A DTL-H1200 for example is NTSC-J region coded, while 1201 is NTSC-U coded with no flexibility between it. It will reject a non-region-matching disc. But on a DTL-H3000 (and 1,2, maybe 3 exists) will take all regions because it's programmed to do so, but wont take CD-R, only mastered pressed discs whereas the H100X will take anything except the yaroze region (again to my understanding)

    That and some components software side are a little different. @TriMesh help me out here
     
  3. RAPTOR115X

    RAPTOR115X Spirited Member

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    Strange, i thought only the Japanese debugs were region locked whilst the PAL/NTSC-U units would boot any region (even if they display incorrectly)
     
  4. PixelButts

    PixelButts Site Soldier

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    I might be wrong. I've only owned JP systems for any dev hardware so you might be right.
    I know H100X should just take virtually anything so there's that.
     
  5. TriMesh

    TriMesh Site Supporter 2013-2017

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    The DTL-H110x are based on the later main board that was introduced in the SCPH-3000, so they have a different CD DSP, different (less buggy) mechacon firmware and no S-Video jack. From a software point of view, they are identical to the earlier blue debug stations.

    The situation with region compatibility is a little confusing - officially, these consoles only supported a single region, but in practice since they didn't check the wobble code on the disc they could read discs from any region. There are some things you need to watch, though:

    The Japanese consoles are a special case - they have the same boot ROM as the retails and except for the earlier DTL-H1000 production won't boot anything except Japanese discs. The CD drive is perfectly capable of reading them, but the boot code in the ROM checks the license sectors on the disc and if they don't match the values for Japan it refuses to boot the disc. Booting via something like Caetla will work for any region, as will burning a disc patched with the Japanese license sectors.

    The video system (also like the retails) is set up with the correct crystal for the mode the console was intended to work with (NTSC/PAL) and will be slightly (about 1%) off frequency if booted into the other mode. This also applies to the color subcarrier on the composite video output, so if you are using composite you will probably get a black and white image unless you have a display that's extremely tolerant of out of spec signals. The DTL-H1200 and DTL-H1201 are a special case - they have the PAL clock input grounded on the board and will completely lock up if you try to switch them to PAL mode because the Vsync interrupts stop.

    The video setup also matches the retails - so the DTL-Hxxx1 consoles have the black level on the video output set to 7.5IRE to match US NTSC standards and the NTSC:J and PAL consoles have their black at 0 IRE. You can normally compensate for this simply by adjusting the display controls though.

    The Yarozes do still check the wobble on the disc, but will accept all 3 regions and the special SCEW code that the Yaroze boot disc uses. They also have both oscillators fitted to the board, so they will produce correct video in both PAL and NTSC mode (they are the only PS1 console ever officially released by Sony that will do this).
     
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  6. HI_Ricky

    HI_Ricky Intrepid Member

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  7. PixelButts

    PixelButts Site Soldier

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    Thank you Trimesh for once again gracing us with knowledge and showing that im wrong because that's more important
     
  8. DeChief

    DeChief Rustled.

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    Pretty sure most DTL-H1000s I've had could only read JP discs... I know for sure that H1200s can only read JP discs, I tried one just recently and it wouldn't boot PAL discs at all. I didn't have any NTSC-U discs to test though.

    I was under the impression that this was the case.

    And there we go! Is there any way to tell if a DTL-H1000 will be able to boot more than just NTSC-J discs, without actually testing it? Is there an upper bound on the serial numbers that can read them?
     
  9. TriMesh

    TriMesh Site Supporter 2013-2017

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    It's really hard to say - the way those debug machines seem to have been made is by taking SCPH-1000 boards from production and reworking them with a different mechacon MCU. At some point fairly late in the SCPH-1000 production run they changed from the original boot ROM to a modified one that was mostly intended to defeat the swap trick but which also had the region check code fixed (the old SCPH-1000 checked the license data and if it didn't match the Japanese region then it didn't display the black license screen - but it still booted the disc).

    In HK, the machines with the modified boot ROM started turning up around May or June '95 - by the end July they were starting to ship SCPH-3000s which all had the updated boot ROM. They were also definitely shipping at least some DTL-H1000s that had the new boot ROM in June '95, because I got one (purely for research purposes, you understand!).
     
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  10. HI_Ricky

    HI_Ricky Intrepid Member

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    yes , old day , ppl find out it order the DTL-H1000 MCU from sony service center ,and build it debug station , but after 2month center upgrade there level , user can not order anymore , XD
     
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  11. Twilight

    Twilight Site Supporter 2015

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    The DTL-H1000 can boot the disc without any region code and also SCEI. It refuses to boot SCEA and SCEE. You can copy your SCEA or SCEE disc onto CD-R and it will work.

    As I can also see, older models had better CD-ROM drives than DTL-H110X. Older models boot old CD-Rs better than DTL-H110X. Checked with at least four DTL-H110X systems with their original CD-ROM drives. I don't remember if I ever tried to use the same drives with these older models. Need to check! :)

    I had DTL-H1200 once... It refused to boot everything but Japanese retail discs. How to use it with CD-Rs then?...
     
  12. HI_Ricky

    HI_Ricky Intrepid Member

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    btw, any one have label "DEX-XXXX " PS1 ?
     
  13. RAPTOR115X

    RAPTOR115X Spirited Member

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    Strange, i thought the DTL-H100x DTL-H110x and DTL-H120x all had the same laser assembly, so overall the DTL-H110x is an improved/revised version of the DTL-H100x.
     
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