First post, by pistolhamster
Hello Vogons,
I want to build a late 90s, early 00s pc that spans both DOS games back to the 80s and the first 3d games of the late 90s and early 00s, when Glide and Voodoo was still a thing. And I want to use my old LAPC-I, Full length 8-bit ISA card.
I have seen an IBM 300PL model 6862 for sale at a reasonable price, but it is a bit of a strange beast that runs with the NLX form factor, which means riser board and weird AGP slot. But apart from that it is a great intersection between The New World of 3d gaming (at least until Glide and VooDoo went away), but also allows for running old DOS games "on the metal".
But I am not sure if the LAPC-I of 330 mm length (13") and 121 mm height (4") will fit in a 300PL. And how it will run.
The one I am looking at is spec'ed with
- P2 400 MHz
- Intel 440BX chipset with 2x USB 1.1 and all legacy ports
- S3 Trio IG
- VooDoo 2 add-in board
- 3,5" floppy disk
- Cd-ROM
- On-board network controller
The thing is very well described on Ancient Electronics.
From what I hear it fits a Sound Blaster AWE 64, and though it isn't full length, it has just enough clearance to not touch the CPU cassette, and there is a bracket for a full length card on that particular desktop case.
Anyone able to confirm?
Second question: Will it be able to run? As far as I can read, the ISA bus is running at 8.25 MHz, this is what the Technical Manual says:
PCI-to-ISA Bridge
On the system board, the Intel PIIX4E provides the interface between the peripheral component interface (PCI) and industry standard architecture (ISA) buses. The chip set is used to convert PCI bus cycles to ISA bus cycles; the chip set also includes all the subsystems of the ISA bus, including two cascaded interrupt controllers, two DMA controllers with four 8-bit and three 16-bit channels, three counters equivalent to a programmable interval timer, and power management. The PCI bus operates at 33 MHz. The ISA bus operates at 8.25 MHz.
For the ISA bus, no resource assignments are given in the system memory or the DMA channels. For information on resource assignments, see “Input/Output Address Map” on page 64 and Figure 51 on page 68 (for IRQ assignments).
Is this going to work without a lot of compatibility problems? Not sure what the BIOS allows for.
Pistolhamster of Copenhagen, Denmark
