Virtual AGC

https://www.ibiblio.org/apollo/

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Virtual AGC is an emulation project that preserves Apollo-era space program computer systems...

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### Enable Landing Guidance Equations

Source: https://www.ibiblio.org/apollo

Key in these commands to enable the landing guidance equations. The equations are prevented from starting automatically due to the phony mode register value.

```agc
VERB 25 NOUN 7 ENTER 101 ENTER
200 ENTER 1 ENTER
```

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### Set Mode Register to 71 (Abort Occurred)

Source: https://www.ibiblio.org/apollo

Key in these commands after the NOUN 62 countdown starts but before ignition to set the mode register to 71, indicating a prior abort. Note that numbers are in octal.

```agc
VERB 21 NOUN 1 ENTER 1010 ENTER
107 ENTER
```

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### Set Mode Register to 63 (Proper Value)

Source: https://www.ibiblio.org/apollo

Key in these commands to set the mode register back to its proper value of 63 after the abort monitor has been disabled.

```agc
VERB 21 NOUN 1 ENTER 1010 ENTER
77 ENTER
```

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### Disable Abort Monitor

Source: https://www.ibiblio.org/apollo

Key in these commands to explicitly disable the abort monitor by clearing the FLAGWORD bit that controls it.

```agc
VERB 25 NOUN 7 ENTER 105 ENTER
400 ENTER 0 ENTER
```

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