Philips P2000B / P2500
I happen to own multiple P2000B's and a P2500.
This page hasn't been written up yet, but here are some photos of various cards.
My plan is to add more functional information, tooling, etc to this page eventually.
Power supply photos are still missing.
I am lacking documentation for this system. If you have any (manuals, field service guide, etc), please contact me!
Click a photo for the full-resolution original.
P2500 Backplane
4-slot backplane carrying the P2500 system bus, the main power-supply connector and a shared security/cartridge (SESAM) connector that connects to a chassis-mounted slot.
Two chassis-mounted TO-220 regulators use the case itself as a heatsink.
Copper identifiers (front): (partially covered by sticker) 8203 235 0869.3 (?)
Copper identifiers (back): 8203 235 0366.3, 8203 235 0368.3
Silkscreen identifier (front): 8203 235 0441.1
Numbered stickers: 01451 (board).
P2500 CPU Card
Zilog Z80 CPU, 4KB Intel D2732A-3 ROM, 8x HM486402 64Kbit = 64KB RAM (socketed).
Check the rotated image for readable ICs.
Copper identifiers (front): 8203 235 0302.4
Copper identifiers (back): 8203 235 0303.4 (?), 5103 103 3059.2
Silkscreen identifier (front): 8203 235 0344.1
Numbered stickers: 51521, 51531, 51541, 51551 (all on ICs), 12812 (Intel D2732A-3 ROM), 01413 (card).
Boot ROM dump (IC ref 7129, sticker 12812, D2732A-3, 4KB): Download .bin
PROM dumps:
- Sticker 51521 (IC ref 7117, N82S129N): Download .bin
- Sticker 51531 (IC ref 7127, N82S129N): Download .bin
- Sticker 51541 (IC ref 2113, N82S137N): Download .bin
- Sticker 51551 (IC ref 2112, N82S137N): Download .bin
P2500 Video Card
MC6845P display controller, 12x MB8116E 12Kbit DRAM (8-bit character code + 4-bit attribute nibble?), 4KB Intel D2732-6 character ROM.
This one seemingly has had some modifications.
Copper identifiers (front): 8203 235 0304.2, 5103 103 3062.2
Copper identifiers (back): 8203 235 0305.2, 8203 235 0336.2
Silkscreen identifier (front): 8203 235 0338.1
Numbered stickers: 12862 (Intel D2732-6 character ROM), 8412110 (card), 5/03/09 28040 (card), 0144450 (card).
Character ROM dump (IC ref 7109, sticker 12862, D2732-6, 4KB): Download .bin
Desktop font recreated from this ROM: Download .otf
P2500 Floppy Controller
NEC D765C-based.
Seemingly older version of the other floppy controller.
Copper identifiers (front): 8203 235 0309.3, 8203 235 0340.3
Copper identifiers (back): 8203 235 0310.3 5103 103 3060.3
Silkscreen identifier (front): 8203 235 0341.1
Numbered stickers: 51561 (IC), 5/03/09 28020 (card), 01423 (? (partially covered) card)
PROM dump (sticker 51561, IC ref 7105, N82S129N): Download .bin
P2500 Fixed Disc Card
Loose card of unknown origin picked up in a bulk purchase.
Has very pronounced clip-on test points soldered in line with most data lines, but lacks the usual top edge connector.
Bears hand-written markings with black marker 'P2500 FXD Controller' and on the back 'ƒ10,-', indicating that it was perhaps sold 2nd hand for 10 Dutch Guilders at some point.
Check the rotated image for readable ICs.
Copper identifiers (front): 8203 235 0539.1, 8203 235 0541.1
Copper identifiers (back): 8203 235 0540.2, 5103 103 3099.2
Silkscreen identifier (front): 8203 235 0543.2
Numbered stickers: 52091 (IC), 02351 (card)
PROM dump (sticker 52091, IC ref 7335, N82S129N): Download .bin
P2000B Series Floppy Controller
NEC D765C-based.
Has had some modifications.
Loose card of unknown origin picked up in a bulk purchase.
Copper identifiers (front): 8203 235 0309.5, 8203 235 0340.4
Copper identifiers (back): 5103 103 3060.5, 8203 235 0310.5, 8203 235 0335.4 (?)
Silkscreen identifier (front): 8203 235 0341.2
Numbered stickers: 51561 (IC), 01423 (card), (5103, 104, 28020, 36514, 1-8-86, 19-9-86; filled in list on sticker. Last two perhaps service interval dates?)
PROM dump (sticker 51561, IC ref 7105, N82S129N): Download .bin
