Industry Standard Architecture (ISA) is the 16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s. The bus was (largely) backward compatible with the 8-bit bus of the 8088 -based IBM PC, including the IBM PC/XT as well as IBM PC compatibles.

2022年1月19日 · Since the last decades we have seen several 32bits ISA standards appear. Some of them like RISC-V, MIPS or Power are now even open-source. Is there such a standard for 8bits ISA? I have feel that 8bit CPUs are completely abandoned in favor of 32bit today.

The ISA bus is an 8-bit or 16-bit communication highway that runs at the same clock speed as the CPU. In the original IBM PC and XT, they used the same crystal oscillator as the CPU, so both ran at 4.77 MHz.

Compact ISA 8-bit Backplane board. This backplane was designed as a smaller version of Micro ATX ISA Backplane. It can be used to build a compact IBM PC/XT compatible system using the Micro 8088 processor board, and the 8-bit ISA cards that I've designed: ISA Super VGA, ISA Floppy Disk and Serial Controller, XT-CF-Lite, ISA OPL2.

2019年7月21日 · This project is to create a simple 8-BIT ISA I/O board for use with classic IBM PC/XT/AT systems for the purpose of experimenting with creating of BIOS Extension ROMS. The design includes a GAL16V8 chip for decoding the I/O address and eight LEDs that show the status of the 8-bit register.

2024年9月26日 · ISA 8-bit Backplane 是一个紧凑的 8 位 ISA 总线背板，设计用于构建 IBM PC/XT 兼容系统。 该项目由 skiselev 开发，旨在提供一个更小的 Micro ATX ISA 背板版本，适用于使用 Micro 8088 处理器板和 8 位 ISA 卡的系统。

2016年2月13日 · It is called XTMax and it combines the functionality of three ISA cards: 1) Conventional memory any amount up to 640 KB with zero wait states and fully supports DMA so it can be used with physical floppy and hard drive controllers. 2) 4 MB of Expanded RAM using an updated LoTech EMM driver.

1998年3月1日 · ISA cards can be either 8-bit or 16-bit. 8-bit cards only uses the first 62 pins and 16-bit cards uses all 98 pins. Some 8-bit cards uses some of the 16-bit extension pins to get more interrupts. 8-bit card: 62 Pin Connector at the card. 62 Pin Connector at the computer. 16-bit card: 62+36 PIN EDGE CONNECTOR MALE at the card

2024年11月17日 · XTMax is a software-defined 8-bit ISA card which uses a Teesny 4.1 microcontroller board that provides the functionality of THREE vintage ISA cards. It can expand "conventional" motherboard RAM up to 640 KB, adds 4 MB of Expanded RAM, and provides hard-drive access using a MicroSD card.

ISA 8-Bit Ethernet Controller is an open source network interface controller (NIC) card, designed specifically to be used in computers with 8-bit only ISA (aka XT) bus, such as IBM* PC, IBM* PC XT, various PC/XT compatibles, for example Micro 8088 system. It is based on Realtek RTL8019 ethernet controller and is NE2000-compatible.