Tetris (USA) NES version - Piece and Next Piece Modifier codes

[erpster7]

Here are the codes for modifying the in-game piece and "Next" Piece for the NES version of Tetris (USA):

In-game piece modifier codes [takes effect immediately]: - 0042:?? or 0062:??
Note: you cannot rotate the pieces while enabling any one of these codes
0042:00 [T-block - upside down]
0042:02 [T-block]
0042:04 [J-block]
0042:06 [J-block - upside down]
0042:08 [Z-block]
0042:09 [Z-block - flipped]
0042:0A [square block]
0042:0B [S-block]
0042:0C [S-block - flipped]
0042:0D [L-block]
0042:0F [L-block - upside down]
0042:11 [straight line block - vertical]
0042:12 [straight line block - horizontal]

Next piece modifier codes (the block that appears in the "Next" window): - 00BF:??
00BF:02 [T-block]
00BF:07 [J-block]
00BF:08 [Z-block]
00BF:0A [square block]
00BF:0B [S-block]
00BF:0E [L-block]
00BF:12 [straight line block]