Very high-level functions as interrupts

[eskojones]

for example, an HTTP client that could request like:

• r1 = url
• r2 = method
• r3 = destination in memory of response data and then a result like:
• r0 = bytes read
• r10 = 0 on success, 1 on failure

[eskojones]

another one would be a designated int code for a pixel buffer graphics draw operation (basically just a "present" op) it might work something like:

• r1 = address of pixels
• r2 = bits per pixel
• r3 = num pixels alternatively used in conjunction with a second interrupt which set the graphics mode, thereby removing the need for r2 and r3 (and maybe even r1)