Coins of the Rhodesian dollar Coins of the Rhodesian dollar The coins of the Rhodesian dollar were part of the physical form of Rhodesia's historical currency, the Rhodesian dollar. (click for obverse image) (click for reverse image) In late 1969 Rhodesian voters agreed to adopt a new constitution which would establish a republic. On February 17, 1970, Rhodesia changed over to decimal currency. The Federation of Rhodesia and Nyasaland halfpenny and penny were withdrawn from circulation and replaced with the cent coin, 1 cent coin (click for image) (their values were not exactly equal) and a cent (3d) "tickey". The new coins depicted the Rhodesian
Decimal computer extended to wider formats and hence are now slower than using 32-bit or wider BCD 'tricks' to compute in BCD (see ). The x87 FPU has instructions to convert 10-byte (18 decimal digits) packed decimal data, although it then operates on them as floating-point numbers. The Motorola 68000 provided instructions for BCD addition and subtraction; as does the 6502. In the much later 68000 family-derived processors, these instructions were removed when the Coldfire instruction set was defined, and all IBM mainframes also provide BCD integer arithmetic in hardware. The Zilog Z80, Motorola 6800 and its derivatives, together with other 8-bit