P3-600EB is a Coppermine CPU with 133MHz FSB. BX boards can usually manage that, but no guarantees.
In terms of your requirements, pretty much any Slot 1 board will give you a single PCI slot, most also offer AGP. The challenge is combining 133MHz FSB and Coppermine voltage support ('late' features) with at least one ISA slot for that AWE64 ('early' features).
Two main options:
1) go for BX (best performance per MHz, and most have ISA slots, even if they support CuMine voltage) and hope you can reach 133MHz. If not you may have to run the CPU at 450MHz (its 4.5x multiplier is fixed).
2) go for safe and take a 133MHz-supporting chipset, with ISA slot(s), and accept the marginally lower performance and need for chipset drivers.
If going for the former, watch out for Coppermine voltage support (hence the question on exact revision of P2B - it matters!) and make sure the board allows a 1/4 PCI divider (most boards with CuMine voltage will have that, but not all. Without it you'll also be overclocking PCI, which will frequently be the bottleneck).
If going for the latter, avoid the ubiqitous Via ApolloPro133 (non-A)/693A (yes, A on the chipset model number for the non-A chipset is confusing), as performance is really bad. The Via ApolloPro133A/694X is much better and a very viable option. You can easily tell the difference by the AGP slot: 693A has AGP2x and a divider in the slot, 694X has a universal AGP4x slot with no divider. There are some other options. A real unicorn would be an i815 board with ISA bridge, but that's not realistic. One thing you do occasionally see is i820 chipset boards with Rambus memory. The Asus P3C-E pairs that with an ISA slot. Rambus had terrible press back in the day due to huge price, nasty corporate practices, very buggy early implementations and no compelling performance advantage to compensate. However price&politics are hardly an issue now (RDRAM is as cheap as SDRAM) and performance may not be better than i440BX, but with PC800 it's pretty much on par, and beats the Via 694X easily. And then there's Serverworks HE-SL. If you can find a Tyan Thunder 2500, you can stick both P3-600EB into it, add insane amounts of RAM and actually outperform BX on some benchmarks. But one of these is unlikely to come cheap. Realistically, I'd aim for ApolloPro133A with ISA, something like the Asus P3V4X, or any number of similar boards.