Fam Zheng
388b505e0b
- 后端 FastAPI 重写为 axum + rusqlite (musl static, 2.8MB) - 前端原样搬运 (Vue3 + Vite + Pinia + vue-router + vite-plugin-yaml) - k8s: cube-simpleasm ns + 1Gi PVC (k3s local-path) + Recreate strategy - CI: 复刻 deploy-cube.yml，按 apps/simpleasm/** 触发 - cube 门户里 simpleasm 状态从 pending 改成 live - 数据冷启 (Fam 拍板不带历史进度)
53 lines
1.3 KiB
YAML
53 lines
1.3 KiB
YAML
id: 9
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title: Loops
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subtitle: The power of repetition
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description: Use branches to build a loop
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tutorial:
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- title: What is a loop?
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text: >
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A loop runs the same code **over and over**. In assembly, a loop is just
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**branching back to a label**!
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- title: Loop structure
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text: >
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① initialize ② do work ③ update the counter ④ test + branch back:
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code: |
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MOV R4, #0 ; ① initialize
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loop: ; loop start
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ADD R4, R4, #1 ; ②③ counter += 1
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CMP R4, #5 ; ④ reached 5?
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BLE loop ; not yet, jump back
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XHLT
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- title: Watch out!
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text: >
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Forget to update the counter and you've made an **infinite loop**
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(don't worry — execution stops automatically after 10000 steps).
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goal: Compute **1+2+3+...+10** into **R0** (the answer is 55)
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initialState: {}
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testCases:
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- init: {}
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expected:
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registers:
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R0: 55
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hints:
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- "R0 accumulates the sum, R4 is the counter (1 to 10)"
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- "Loop body: ADD R0, R0, R4 / ADD R4, R4, #1 / CMP R4, #10 / BLE loop"
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- "Full: MOV R0, #0 / MOV R4, #1 / loop: ADD R0, R0, R4 / ADD R4, R4, #1 / CMP R4, #10 / BLE loop / XHLT"
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starThresholds: [7, 9, 12]
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starterCode: |
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; Compute 1+2+3+...+10
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; Result goes in R0
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;
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; Tip: use a register as the counter
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XHLT
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showMemory: false
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