PS2 Developer's Debugging Consoles (DTL-H)
PS2 Software Developer's "Debugging" Consoles, or DTL-H series consoles are made exclusively for, and sold only to licanced or "registered private" developers of PlayStation and PS2 games, and they are the "in house" consoles that Sony uses when they review demo discs submitted to them for evaluation for production. These are essentially the same as the conventional SCPH line they sell, however, they lack the ability to play DVD movies, since they aren't made for entertainment, and they have one tiny, yet crucial difference in the software security of their bios. These machines are made for testing PS2 games in development, burned on DVD-R on the PC's of the programmers, and at SCEI.
The PS2 authentication code on original discs is between the barcodes on that inside ring "extra sector" that recordables don't have, even if there was a way to record them (only PlayStaions even track deep enough to look inside the normal image surface), therefore, NO commercail SCPH console will ever load ANY burned disc. So these special consoles have an exception in the software security, that will still ban straight copies, but ignore the absense of that inside ring code, and allow for bootup of dvd-r "original masterdiscs", ONLY if all other PS2 required data is correct, when the primary volume label contians (in caps, exact word) "MASTER", identifying the disc as a masterdisc in the PS2 disc information sector, anyone who knows how to use Sony's CD DVD Generator Software knows that certain volume info slots MUST contain an entery, and which one to correct, now, for debugging console compliance. I've attached, for anyone lucky enough to have a Developer's DeBugging Console, a "discpatcher" program that you can use to patch PS2 DVD image files (they don't do PS2 cd-r's, only PSX cd-r's validate) by selecting it with the browser, checking the MASTERDISC option box, and hitting "PATCH", that will make the image file a "mock masterdisc" which will boot up normally, like originals do, on the developer's tool DTL-H series of consoles, as well as pix of one of mine, I have 2 Japanese, a DTL-H10000 and a DTL-H10000S (version "0" GH001), and a US/C DTL-H30001 (version 1), and I recently parted with a PAL DTL-H30003 (version 3), 2 of these looked like regular PS2's, but the other two have "TEST" on the top, instead of the normal PS2 logo, including the DTL-H10000S, which now sports the clear blue 10k replacement cover set (with transparent drivebay cover) instead. I posted a couple pix of the "TEST" console cover, a DeBugger dead givaway. 2 of them I got from the Banktruptsy Liquidation company that won the entire contents of the offices of the appearantly now defunked 3DO software co., and have 3DO Property ID stickers on them, still. The seller sold them as programmer's consoles, but had absolutely no idea what made them unique, nor did the buyer of my DTL-H30003. in fact only the person I bought that one, and the DTL-H10000S I put the clear blue cover on, knew what their secret was, it would seem that their exclusivity and scarcity makes them the targets of collectors, even when they don't actually get the point of what makes them so special.
There is also a double strength super-station with 2 of all the major components, doubling the machines memory and processing power, called DTL-T10000.. these have double bulging cases with "TOOL" depressed in the side, so the pix I've seen always show them vertical, and I've heard them nicknamed "THE MONOLITH". These were used in primary software concept development at Sony, and I really, really want one of those, too, but these are Sony's PlayStations, and they ain't about to give one up.....