Many variations and related products of the PC Engine were released.
CoreGrafx The
PC Engine CoreGrafx is an updated model of the PC Engine, released in Japan on December 8, 1989. It has the same form factor as the original PC Engine, but it changes the color scheme from white and red to black and blue and replaces the original's
radio frequency-output connector with a
composite video AV port. It also used a revised CPU, the HuC6280A, which supposedly fixed some minor audio issues. A recolored version of the model, known as the
PC Engine CoreGrafx II, was released on June 21, 1991. Aside from the different coloring (light grey and orange), it is nearly identical to the original CoreGrafx except that the CPU was changed back to the original HuC6280.
SuperGrafx The
PC Engine SuperGrafx, released on the same day as the CoreGrafx in Japan, is an enhanced variation of the PC Engine hardware with updated specs. This model has a second HuC6270A (VDC), a HuC6202 (VDP) that combines the output of the two VDCs, four times as much RAM, twice as much video RAM, and a second layer/plane of scrolling. It also uses the revised HuC6280A CPU, but the sound and color palette were not upgraded, making the expensive price tag a big disadvantage to the system. As a result, only five exclusive SuperGrafx games and two hybrid games (
Darius Plus and
Darius Alpha were released as standard HuCards which took advantage of the extra video hardware if played on a SuperGrafx) were released, and the system was quickly discontinued. The SuperGrafx has the same expansion port as previous PC Engine consoles, but requires an adapter in order to utilize the original CD-ROM² System add-on, due to the SuperGrafx console's large size.
Shuttle The
PC Engine Shuttle was released in Japan on November 22, 1989, as a less expensive model of the console, retailing at ¥18,800. It was targeted primarily towards younger players with its spaceship-like design and came bundled with a TurboPad II controller, which is shaped differently from the other standard TurboPad controllers. The reduced price was made possible by removing the expansion port from the back, making it the first model of the console that was not compatible with the CD-ROM² add-on. However, it does have a slot for a memory backup unit, which is required for certain games. The RF output used on the original PC Engine was also replaced with an A/V port for the Shuttle. The PC Engine Shuttle was also distributed in South Korea. It was released in 1990 by Daewoo Electronics.
TurboExpress The
TurboExpress, known as the PC Engine GT in Japan, is a portable version of the console released in December 1990. It can play HuCard games on a backlit, active-matrix color LCD screen, the most advanced on the market for a portable video game unit at the time. The screen contributed to its high price and short battery life, however, which hurt its performance in the market. It also has a TV tuner adapter as well as a two-player link cable.
LT The
PC Engine LT is a model of the console in a
laptop form, released on December 13, 1991, in Japan, retailing at ¥99,800. The LT does not require a television display (and does not have any AV output) as it has a built-in flip-up screen and speakers, just as a laptop would have, but, unlike the GT, the LT runs on a power supply. Its expensive price meant that few units were produced compared to other models. The LT has full expansion port capability, so the CD-ROM² unit is compatible with the LT the same way as it is with the original PC Engine and CoreGrafx. However, the LT requires an adapter to use the enhanced Super CD-ROM² unit.
Duo NEC Home Electronics released the
PC Engine Duo in Japan on September 21, 1991, which combined the PC Engine and Super CD-ROM² unit into a single console. The system can play HuCards, audio CDs, CD+Gs, standard CD-ROM² games and Super CD-ROM² games. The North American version, the
TurboDuo, was launched in October 1992. Two updated variants were released in Japan: the
PC Engine Duo-R on March 25, 1993, and the
PC Engine Duo-RX on June 25, 1994. The changes were mostly cosmetic, but the RX included a new 6-button controller.
Third-party models The
PC-KD863G is a
CRT monitor with built-in PC Engine console, released on September 27, 1988, in Japan for ¥138,000. Following NEC's PCs' naming scheme, the PC-KD863G was designed to eliminate the need to buy a separate television set and a console. It output its signals in
RGB, so it was clearer at the time than the console which was still limited to RF and
composite. However, it has no BUS expansion port, which made it incompatible with the CD-ROM² System and memory backup add-ons. The
X1-Twin was the first licensed PC Engine-compatible hardware manufactured by a third-party company, released by
Sharp in April 1989 for ¥99,800. It is a hybrid system that can run PC Engine games and
X1 computer software.
Pioneer Corporation's
LaserActive supports an add-on module which allows the use of PC Engine games (HuCard, CD-ROM² and Super CD-ROM²) as well as new "LD-ROM²" titles that work only on this device. NEC also released their own LaserActive unit (NEC PCE-LD1) and PC Engine add-on module, under an
OEM license. A total of eleven LD-ROM2 titles were produced, with only three of them released in North America.
Other foreign markets Outside North America and Japan, the TurboGrafx-16 console was released in
South Korea by a third-party company,
Haitai, under the name
Vistar 16. It was based on the American version but with a new curved design.
Daewoo Electronics distributed the PC Engine Shuttle in the South Korean market as well. ==Technical specifications==