🕹️ Practice arcade
Extra games, not extra homework — timed sprints, survival runs that end when your lives run out, and mastery drills built from the same skills Assembly and Computer Architecture teaches.
⚡ Sprints
Beat the clock.
🔢 Hex Sprint
Bits to hex, hex to decimal, and what an unsigned byte holds after it wraps. Ninety seconds.
📍 Address Sprint
Pointer steps, base + index × scale + displacement, lea against mov, and cells of a 2D array. Two minutes.
🎛️ Bit Twiddling Sprint
AND, OR, XOR and AND-NOT on a byte, the right mask for a job, and shr against sar on a negative value. Ninety seconds.
⏱️ Performance Sprint
CPI from an instruction mix, two designs through the performance equation, and Amdahl's law. Two minutes.
💀 Survival
Each miss costs a life — lose them all and the run ends.
➖ Two's Complement Survival
Read a negative pattern, write one, and widen one without losing its sign. Three misses and you're out.
📏 Register Width Survival
What a write to eax, ax or al leaves in rax, and what movsx, movzx and ldrsb really load. Three misses and you're out.
🚩 Flags and Branches
ZF, SF, CF and OF after an add or a sub, NZCV after subs, and which of jl or jb is taken. Three misses and you're out.
🗄️ Memory Hierarchy Survival
AMAT for one and two levels, cache index bits and sets, and a virtual address through the page table. Three misses and you're out.
🎯 Mastery
No clock — just get N in a row.
🔀 Byte Order Mastery
Read little-endian values out of a memory dump and find where each byte of a store lands. Five in a row.
🧱 Struct Layout Mastery
Field offsets and sizeof with padding and tail padding, on LP64 Linux. Five in a row.
🎯 Float Bits Mastery
Decode a binary32 pattern, encode a value, and find the wrong step in a hand decode. Five in a row.
🧬 Machine Code Mastery
Pull register and immediate fields out of RISC-V and ARM64 words, and work out where a branch lands. Five in a row.