From 34cf31e7671a29f93edb620c79055fce846346ce Mon Sep 17 00:00:00 2001 From: Riccardo Date: Sun, 25 Jul 2021 14:04:55 +0200 Subject: [PATCH] Update README.md Add IC descriptions --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 9e31e33..0aaf59b 100644 --- a/README.md +++ b/README.md @@ -2,7 +2,7 @@ The project is based on the knowing of internal structure of UniDisk 3.5 drive, it uses same HW of Apple II machines. It is a smart device built by controlled drive board powered by ->65c02 mp @2.0 Hz with 2KB RAM and 8KB ROM plus 527 byte of I/O peripheral registers, all addressing by memory mapped method. +>65c02 mp @2.0 MHz (model GTEu G65SC02P-2 CMOS 8bit 2MHz PDIP40) with 2KB StaticRAM (model HITACHI HM6116LP-2 CMOS 8bit 120ns PDIP24) and 8KB PROM IWM Floppy disk controller (model VLI VF4060-001 344-0041-B IWM PDIP28) plus 527 byte of I/O peripheral registers, all addressing by memory mapped method. The UniDisk 3.5 drives can use directly by Apple //c with 3.5 ROM (ROM version 0) or by Apple IIe or an II Plus using special interface controller card aka "LIRON card".