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The last models in the Amstrad CPC range were the [[Plus|Amstrad 464 Plus]] and [[Plus|Amstrad 6128 Plus]], launched together in 1990. The CPC name is said to have been dropped because of a legal dispute with a French firm, though it is also likely that "CPC 6128 Plus" was considered too unwieldy a name and one redolent of the machine's mid-80s heritage.
Unlike the original model, the 464 Plus lacks a tape counter for tracking cassette positions. It also omits the distinctive loading sounds that were once audible through the speaker during tape operations on the original CPC 464.
The Plus series were quite (but not 100%) compatible with the original CPC computers. The compatibility issues came mostly from:
* The emulated [[8255|PPI]] chip, making the keyboard unresponsive
* The emulated [[CRTC]], breaking CPC demos
And unlike the original model, the 464 Plus lacks a tape counter for tracking cassette positions. It also omits the distinctive loading sounds that were once audible through the speaker during tape operations on the original CPC 464.
The Plus series incorporated a list of [[ASIC|new features]], like a cartridge port for instant program loading, DMA for the [[AY]] soundchip, enhanced hardware scrolling, programmable interrupts, 16 hardware zoomable sprites (not vectorized) with an independent palette of 15 colours, and a choice of 4096 colours all in a new, sleek case which mimicked the keyboard-computer design that was ''en vogue'' in the 16-bit market (ST, Amiga etc).