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fix Makefile

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kicer
2025-12-21 21:29:45 +08:00
parent 537f8505bb
commit 465f3b0e13
3 changed files with 32 additions and 26 deletions
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13
scripts/boot1.opt
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@@ -11,18 +11,19 @@ UART1_DR = 0x5231 ; Data register
UART1_BRR1 = 0x5232 ; Baud rate register 1
UART1_CR2 = 0x5235 ; Control register 2
RAM_SIZE = 0x0400 ; Ram size (end of bootloader address)
BOOT1_ULA = 0x03FF ; boot1 ram Upper-Limit-Address
;; Bootloader body (located in OPT reserved area 0x481C-0x483F)
;; Bootloader body (located in OPT reserved area 0x480D-0x483F)
.area DATA
.area HOME
.area OPTION_BOOT
_boot_start_data:
;; Termination flag (copy process stops when encountering 0)
.db 0x00 ; [00] Termination byte
;; [03 D0] RAM address for ret execution
.db (RAM_SIZE-(_boot_go_adr-_boot_start+2))>>8
.db (RAM_SIZE-(_boot_go_adr-_boot_start+2))&0xFF
.db (BOOT1_ULA-(_boot_end-_boot_start)+1)>>8
.db (BOOT1_ULA-(_boot_end-_boot_start)+1)&0xFF
_boot_start:
;; Initialize UART 9600 8N1
@@ -70,3 +71,5 @@ _boot_exit:
_boot_go_adr:
.db 0x80, 0x04 ; [80 04] User program address: 0x8004
_boot_end: