SRAM: Auto-Save
SMS PAL • 50Hz • 313 lines
P1
P2
P1: ← ↑ ↓ → = D-Pad | Z = Btn1 | X = Btn2 | Enter = Play/Pause
P2: W/A/S/D = D-Pad | Q = Btn1 | E = Btn2 | R = Pause/NMI
🔧 Debug Panel
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🧪 Fuse Z80 Test Suite
Upload Fuse's tests.in and tests.expected files below (drag & drop or click), then run. Compares final register & memory state (T-state timing & bus events ignored).
📄 Drop
tests.in here or click to upload
📄 Drop
tests.expected here or click to upload
🐮 JSMoo / SingleStepTests (JSON)
Upload a SingleStepTests / JSMoo per-opcode .json file (e.g. 00.json, cb 46.json) — or a .zip containing many .json files (the whole suite). Runs one instruction per test and compares final registers, WZ & touched memory. Optionally verifies bus cycle events — the [addr, data, "rwmi"] triples (memory & I/O read/write accesses); internal "----" cycles are ignored.
🐮 Drop a
.json or .zip test file here or click to upload
⏱ Frame Timing
🎨 Border Color Debug
🔄 Cycle-Based VDP Status
⚡ VDP Register Corruption
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