What I want in a platform…

Just a small wishlist/rant:

Hardware

No more software buttons. Why do hardware engineers feel the need to make my volume controls, mute button, and power button require intervention from the operating system? Do it in hardware. I really don’t want a volume change to have to wait on the kernel to schedule the handling of its interrupt.

Whether this is a laptop, desktop, or server, make the chassis out of steel that doesn’t flex. I’m not so weak that I need a one-ounce laptop to be satisfied with life.

Casework should be toolless, and components modular easily field-upgradable–even on a laptop. Come up with several form factors for a laptop chassis, and allow the guts to be upgraded over time. Standardize, standardize, standardize. The largest one or two form factors for a laptop should not make weight a consideration.

Plenty of USB ports is a definite must, but I also want internal 10/100/1000 Ethernet and one RS-232 serial port. Also, give me a modular bay that can accommodate a 5.25″ device (optical drive, or even a floppy).

Instruction Set and CPU Architecture

A nice, orthogonal CISC instruction set with lots of flexible datatypes and addressing modes. Lots of general-purpose registers. Give me an instruction to copy bytes, words, etc. directly from RAM to RAM. Don’t make me sidestep through a register. If you can’t do this in pure hardware, microcode it. I don’t particularly care if we’re big-endian or little-endian, but I do like the POWER ISA’s ability to switch endianness. I want a flat virtual memory address space. If we have hardware multitasking (which we should) and the ability to support both little- and big-endian byte ordering, allow me to have different endianness per task segment. Allow CPU microcode to be software-upgradable.

I want several rings of privilege, and although I’m aware that ring transitions require lots of work, please optimize them as much as humanly possible. Don’t give me CALL instructions that are so inefficient as to be less usable than combinations of many more primitive instructions.

Give me lots of I/O channels (with DMA, obviously). I/O processing should be offloaded properly to a specialized ASIC or ASICs. Each I/O bus (PCIe, VME, SCSI, etc.) should be connected to an I/O processor ASIC, and this processor should have a uniform API  in the firmware (see below) abstracting away the differences between the various attached buses.

Give me massive L1 cache, and good support for multiple CPUs. Multiple complete CPU support should be given more priority than multiple cores/threads per CPU.

Firmware

I want a firmware with a fully-realized CLI. Give me a dedicated Ethernet interface for firmware, and allow me to natively redirect console output with VNC over this Ethernet connection, or via ssh if the console is not in graphical mode. The CLI should give me the ability to enumerate all hardware devices, configure things like SCSI IDs, memorable device aliases, Ethernet MAC addresses, etc. I should be able to boot from any partition on any connected storage with a simple command. I should also be able to dump registers and do kernel debugging through this CLI.

The firmware should have an API that is fully supported in all CPU modes without hacks like virtual 8086 mode. This API should allow me to enumerate and access all devices and memory easily. It should be available to a first-stage bootloader.

More to come…