1541 Memory Map 1571 Memory Map 1581 Memory Map ‘Boost Your 1571’ Memory Map DOS sector layout HW Bit Timing Byte Ready Sync Pinout Port A VIA1 Data Register Port B VIA1 Data Register Port B VIA2 Data Register Auxiliary Control Register Peripheral Control Register Interrupt Flag Register Interrupt Enable Register Port A CIA Data… Read more Floppy Drive Deep Dive
Tag: 1571
FLOPPYmate hardware

INTRODUCTION FLOPPYmate requires an interface between the USB and the serial IEC bus. The hardware described in this Blog provides an interface (SER2IEC) between UART and the serial IEC bus for peripheral devices like disk drives 1540, 1541, 1570, 1571 and 1581. UART interface Decide on one of these UART interface types for your FLOPPYmate:USB… Read more FLOPPYmate hardware
C64 Track Display 1541, 1571

INTRODUCTION When working with a 15X1 floppy drive, it comes in quite handy to know the track, the drive is currently accessing. This blog presents a kind of drive-modding for 15X1 afficionados. FEATURES SINGLE IC GAL22V10 SOLUTION 2 DIGITS LATCHED BCD INTERFACE (0 TO 79) LET’S GET STARTED Circuit Description The State Machine in this… Read more C64 Track Display 1541, 1571
FLOPPYmate software

OVERVIEW The FLOPPYmate application is a convenient tool for backing up individual PRG files and/or whole disks, sending DOS commands, as well as checking the drive’s spindle speed. Furthermore the data of a whole track can be displayed as binary and GCR. It’s the answer to how to fast backup and restore 1541, 1571 and… Read more FLOPPYmate software
Boost Your 1571 Floppy Drive

INTRODUCTION Taking a closer look at the 1571 disk drive reveals that it contains the major ICs needed to build a 1581 compatible disk drive. This blog describes how to boost a 1571 so that it can turn into a 1581 with the flip of a switch. FEATURES High compatibility 1581 disk drive emulation Use… Read more Boost Your 1571 Floppy Drive