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# Algorand Specifications

Opcodes for getting data onto the stack.

Some of these have immediate data in the byte or bytes after the opcode.

| OPCODE | DESCRIPTION |
| --- | --- |
| `intcblock uint ...` | prepare block of uint64 constants for use by intc |
| `intc i` | Ith constant from intcblock |
| `intc_0` | constant 0 from intcblock |
| `intc_1` | constant 1 from intcblock |
| `intc_2` | constant 2 from intcblock |
| `intc_3` | constant 3 from intcblock |
| `pushint uint` | immediate UINT |
| `pushints uint ...` | push sequence of immediate uints to stack in the order they appear (first uint being deepest) |
| `bytecblock bytes ...` | prepare block of byte-array constants for use by bytec |
| `bytec i` | Ith constant from bytecblock |
| `bytec_0` | constant 0 from bytecblock |
| `bytec_1` | constant 1 from bytecblock |
| `bytec_2` | constant 2 from bytecblock |
| `bytec_3` | constant 3 from bytecblock |
| `pushbytes bytes` | immediate BYTES |
| `pushbytess bytes ...` | push sequences of immediate byte arrays to stack (first byte array being deepest) |
| `bzero` | zero filled byte-array of length A |
| `arg n` | Nth LogicSig argument |
| `arg_0` | LogicSig argument 0 |
| `arg_1` | LogicSig argument 1 |
| `arg_2` | LogicSig argument 2 |
| `arg_3` | LogicSig argument 3 |
| `args` | Ath LogicSig argument |
| `txn f` | field F of current transaction |
| `gtxn t f` | field F of the Tth transaction in the current group |
| `txna f i` | Ith value of the array field F of the current transaction |
| `txnas f` | Ath value of the array field F of the current transaction |
| `gtxna t f i` | Ith value of the array field F from the Tth transaction in the current group |
| `gtxnas t f` | Ath value of the array field F from the Tth transaction in the current group |
| `gtxns f` | field F of the Ath transaction in the current group |
| `gtxnsa f i` | Ith value of the array field F from the Ath transaction in the current group |
| `gtxnsas f` | Bth value of the array field F from the Ath transaction in the current group |
| `global f` | global field F |
| `load i` | Ith scratch space value. All scratch spaces are 0 at program start. |
| `loads` | Ath scratch space value. All scratch spaces are 0 at program start. |
| `store i` | store A to the Ith scratch space |
| `stores` | store B to the Ath scratch space |
| `gload t i` | Ith scratch space value of the Tth transaction in the current group |
| `gloads i` | Ith scratch space value of the Ath transaction in the current group |
| `gloadss` | Bth scratch space value of the Ath transaction in the current group |
| `gaid t` | ID of the asset or application created in the Tth transaction of the current group |
| `gaids` | ID of the asset or application created in the Ath transaction of the current group |