"Blackjack" was written by myself in 1986. The game logic was adapted from a similar game I had written earlier for the first "TRS-80 Pocket Computer". This is a direct application of Greg Harder's "SRAM Hi-Res Extended BASIC" (aka SHREB) that demonstrates just a few of the cool things you can do with this package. Runs in a standard 16K ZX81 or equivalent, plus 8K SRAM. Works fine in ZX Emulator, except the input lines are a bit messed up.