Question about which tools to use, bugs, the best way to implement a function, etc should go here. Don't forget to see if your question is answered in the wiki first! When in doubt post here.
Chances are that you did not proprely enabled interrupts at 8259 (both IRQ12 and IRQ2 must be enabled) or that you're not properly acknowledging the IRQ (0x20 must be sent to both port 0x20 and 0xA0 for IRQs above 7 ...)